My issues have also been caused by the way I was using Witter and had it configured. I have set the time line to refresh every 5 mins (I did mean mins but typed secs) and Mention every 10, I also did an uninstall and reinstall.

Running from the terminal as requested:
After about 25 mins one Retweet and three other tweets appeared on Twitter.com none on timeline after doing a refresh, the timer was still spinning around.
I closed twitter.com to reduce the api hit.
After further 5 mins with the timer spinning I closed Witter

Xterminal did not capture it all but this is what I got:

2010-05-20 18:03:27
updating all stored images for 27915827
offset hours = +0
None
2010-05-20 18:03:23
updating all stored images for 17181843
offset hours = +0
None
2010-05-20 18:03:22
offset hours = +0
None
2010-05-17 23:46:39
reply to skr0
updating all stored images for 110376411
offset hours = +0
None
2010-05-20 18:03:17
running tasks: 2
offset hours = +0
None
2010-05-12 20:21:41
reply to skr0
offset hours = +0
None
2010-05-11 22:12:09
reply to skr0
offset hours = +0
None
2010-05-11 13:17:50
reply to skr0
offset hours = +0
None
2010-05-06 20:14:56
reply to skr0
offset hours = +0
None
2010-05-05 22:22:49
reply to skr0
offset hours = +0
None
2010-05-05 10:21:21
reply to skr0
offset hours = +0
None
2010-05-04 20:07:15
reply to skr0
offset hours = +0
None
2010-04-28 20:50:17
reply to skr0
offset hours = +0
None
2010-04-24 00:59:54
reply to skr0
offset hours = +0
None
2010-04-23 19:46:41
reply to skr0
offset hours = +0
None
2010-04-23 19:12:24
reply to skr0
offset hours = +0
None
2010-04-23 17:24:23
reply to skr0
offset hours = +0
None
2010-04-22 20:49:44
running tasks: 1
running tasks: 2
getting tweets with Skr0
base url = https://twitter.com/
base url of api object = https://twitter.com/
refreshing since14373468123
fetching tweets from https://twitter.com/statuses/friends_timeline.json
running tasks: 1
running tasks: 2
performing search
nothing to search
running tasks: 1
running tasks: 2
performing search
nothing to search
running tasks: 1
running tasks: 2
getting mentions
refreshing since14362663963
running tasks: 1
running tasks: 2
performing search
nothing to search
running tasks: 1
<hildon.Button object at 0x41b2e828 (HildonButton at 0x3a5008)>
timeline
running tasks: 2
getting tweets with Skr0
base url = https://twitter.com/
base url of api object = https://twitter.com/
refreshing since14373468123
fetching tweets from https://twitter.com/statuses/friends_timeline.json
Exception in thread Thread-7:
Traceback (most recent call last):
File "/usr/lib/python2.5/threading.py", line 486, in __bootstrap_inner
self.run()
File "/usr/lib/python2.5/threading.py", line 446, in run
self.__target(*self.__args, **self.__kwargs)
File "/home/user/src/witter/fremantle/src/opt/witter/witter/refresh_thread.py", line 69, in _refresh
File "/opt/witter/witter.py", line 700, in getTweetsWrapper
self.activeAccount.getTweets(auto=autoval, older=get_older, get_count=more)
File "/home/user/src/witter/fremantle/src/opt/witter/account/account.py", line 215, in getTweets
File "/home/user/src/witter/fremantle/src/opt/witter/account/account.py", line 857, in set_pic_for_id
File "/home/user/src/witter/fremantle/src/opt/witter/account/account.py", line 884, in set_pix
GError: Image file '/home/user/.witterPics/Twitter/20635230.jpg' contains no data

running tasks: 3
performing search
nothing to search
running tasks: 2
running tasks: 3
getting mentions
refreshing since14362663963
running tasks: 2
<hildon.Button object at 0x41b2e530 (HildonButton at 0x3a5008)>
timeline
running tasks: 3
getting tweets with Skr0
base url = https://twitter.com/
base url of api object = https://twitter.com/
refreshing since14374661104
fetching tweets from https://twitter.com/statuses/friends_timeline.json
running tasks: 2
<hildon.Button object at 0x41b2e530 (HildonButton at 0x3a5008)>
timeline
running tasks: 3
getting tweets with Skr0
base url = https://twitter.com/
base url of api object = https://twitter.com/
refreshing since14374661104
fetching tweets from https://twitter.com/statuses/friends_timeline.json
<hildon.Button object at 0x41b2e530 (HildonButton at 0x3a50a8)>
mentions
running tasks: 2
<hildon.Button object at 0x41b29b70 (HildonButton at 0x3a5008)>
timeline
running tasks: 3
getting tweets with Skr0
base url = https://twitter.com/
base url of api object = https://twitter.com/
refreshing since14374661104
fetching tweets from https://twitter.com/statuses/friends_timeline.json
running tasks: 2
running tasks: 3
performing search
nothing to search
running tasks: 2
<hildon.Button object at 0x41b29210 (HildonButton at 0x3a5008)>
timeline
running tasks: 3
getting tweets with Skr0
base url = https://twitter.com/
base url of api object = https://twitter.com/
refreshing since14374661104
fetching tweets from https://twitter.com/statuses/friends_timeline.json
running tasks: 2
Stop Wittering
shutting down refresh loop
written config object to file
stopping thread
stopping thread
stopping thread
stopping thread
stopping thread
killing thread
killing thread
killing thread
killing thread
~ $

Opened Witter again from the command line and left for 6 mins, no tweets displayed, hit refresh time 18:46.
One Tweet displayed.
Opened twitter.com and there were 3 tweets inc one retweet.
Code from this:


jpg' contains no data

updating all stored images for 123643330
offset hours = +0
None
2010-05-20 18:37:18
offset hours = +0
None
2010-05-20 14:56:03
reply to skr0
updating all stored images for 9266222
offset hours = +0
None
2010-05-20 18:37:17
updating all stored images for 143500048
offset hours = +0
None
2010-05-20 18:37:15
updating all stored images for 50941753
offset hours = +0
None
2010-05-20 18:37:14
offset hours = +0
None
2010-05-19 00:27:57
reply to skr0
updating all stored images for 28147340
offset hours = +0
None
2010-05-20 18:37:10
updating all stored images for 44293405
offset hours = +0
None
2010-05-20 18:37:08
updating all stored images for 24420975
offset hours = +0
None
2010-05-20 18:37:05
offset hours = +0
None
2010-05-18 10:51:57
reply to skr0
updating all stored images for 50649568
offset hours = +0
None
2010-05-20 18:37:00
updating all stored images for 120753292
offset hours = +0
None
2010-05-20 18:36:57
updating all stored images for 14789018
offset hours = +0
None
2010-05-20 18:36:56
updating all stored images for 19114679
offset hours = +0
None
2010-05-20 18:36:55
offset hours = +0
None
2010-05-17 23:46:39
reply to skr0
updating all stored images for 72116831
offset hours = +0
None
2010-05-20 18:36:49
updating all stored images for 118537891
offset hours = +0
None
2010-05-20 18:36:48
updating all stored images for 17856771
offset hours = +0
None
2010-05-20 18:36:45
updating all stored images for 133815891
offset hours = +0
None
2010-05-20 18:36:44
offset hours = +0
None
2010-05-12 20:21:41
reply to skr0
updating all stored images for 9081932
offset hours = +0
None
2010-05-20 18:36:42
offset hours = +0
None
2010-05-11 22:12:09
reply to skr0
updating all stored images for 70172755
offset hours = +0
None
2010-05-20 18:36:41
updating all stored images for 123945973
offset hours = +0
None
2010-05-20 18:36:39
updating all stored images for 144329040
offset hours = +0
None
2010-05-20 18:36:38
offset hours = +0
None
2010-05-11 13:17:50
reply to skr0
updating all stored images for 14687806
offset hours = +0
None
2010-05-20 18:36:36
running tasks: 2
offset hours = +0
None
2010-05-06 20:14:56
reply to skr0
offset hours = +0
None
2010-05-05 22:22:49
reply to skr0
offset hours = +0
None
2010-05-05 10:21:21
reply to skr0
offset hours = +0
None
2010-05-04 20:07:15
reply to skr0
offset hours = +0
None
2010-04-28 20:50:17
reply to skr0
offset hours = +0
None
2010-04-24 00:59:54
reply to skr0
offset hours = +0
None
2010-04-23 19:46:41
reply to skr0
offset hours = +0
None
2010-04-23 19:12:24
reply to skr0
offset hours = +0
None
2010-04-23 17:24:23
reply to skr0
offset hours = +0
None
2010-04-22 20:49:44
running tasks: 1
running tasks: 2
performing search
nothing to search
running tasks: 1
running tasks: 2
getting tweets with Skr0
base url = https://twitter.com/
base url of api object = https://twitter.com/
refreshing since14374661104
fetching tweets from https://twitter.com/statuses/friends_timeline.json
offset hours = +0
None
2010-05-20 18:43:09
Exception in thread Thread-6:
Traceback (most recent call last):
File "/usr/lib/python2.5/threading.py", line 486, in __bootstrap_inner
self.run()
File "/usr/lib/python2.5/threading.py", line 446, in run
self.__target(*self.__args, **self.__kwargs)
File "/home/user/src/witter/fremantle/src/opt/witter/witter/refresh_thread.py", line 69, in _refresh
File "/opt/witter/witter.py", line 700, in getTweetsWrapper
self.activeAccount.getTweets(auto=autoval, older=get_older, get_count=more)
File "/home/user/src/witter/fremantle/src/opt/witter/account/account.py", line 215, in getTweets
File "/home/user/src/witter/fremantle/src/opt/witter/account/account.py", line 857, in set_pic_for_id
File "/home/user/src/witter/fremantle/src/opt/witter/account/account.py", line 884, in set_pix
GError: Couldn't recognise the image file format for file '/home/user/.witterPics/Twitter/122994639.jpg'

Stop Wittering
shutting down refresh loop
written config object to file
stopping thread
stopping thread
stopping thread
stopping thread
stopping thread
killing thread
killing thread
killing thread
killing thread


From api.twitter.com I got:
150 150 1274381219 2010-05-20T18:46:59+00:00

Hope this help