suffered from this several days.
now, seems to be fixed by myself.
you guys check && confirm.

Found 200 PIDs…
Found process ID 3447 for 'tracker-miner-fs'
Killed process 3447
Setting database locations
Checking database directories exist
Checking database version
Checking database files exist
Removing all database/storage files
Removing first index file:'/home/user/.cache/tracker/first-index.txt'
Removing last crawl file:'/home/user/.cache/tracker/last-crawl.txt'
Removing database:'/home/user/.cache/tracker/meta.db'
Removing db-locale file:'/home/user/.cache/tracker/db-locale.txt'
/usr/lib/duicontrolpanel $ ps -ef | grep track
2529 user tracker-control -F
3450 user /usr/lib/tracker/tracker-store
3528 user grep track
Starting miners…
✓ Applications
✓ File System
✓ Userguides

please do exactly what I code above.
especially check where tracker-store is stilling running after soft-reset.
kill it !! kill them ALL if more than one exist
(nope, never more than one, I just need to quota "KILL THEM ALL")

for the other term running tracker-control -F, if the tracker-store not been killed, shows


21 Aug 2012, 14:42:54: 0 % File System - Initializing
21 Aug 2012, 14:42:54: 0 % Applications - Initializing
21 Aug 2012, 14:42:54: 0 % Userguides - Initializing
21 Aug 2012, 14:42:54: 1 % Applications - Crawling recursively directory '/usr/local/share/applications'
21 Aug 2012, 14:42:54: 1 % Applications - Crawling recursively directory '/usr/local/share/desktop-directories'
21 Aug 2012, 14:42:54: 1 % Applications - Crawling recursively directory '/usr/share/applications'
21 Aug 2012, 14:42:55: 1 % Applications - Crawling recursively directory '/usr/share/desktop-directories'
21 Aug 2012, 14:42:55: 1 % Applications - Crawling recursively directory '/home/user/.local/share/applications'
21 Aug 2012, 14:42:55: 1 % Applications - Crawling recursively directory '/home/user/.local/share/desktop-directories'
21 Aug 2012, 14:42:55: 1 % Applications - Crawling recursively directory '/usr/lib/duicontrolpanel'
21 Aug 2012, 14:42:56: 28 % Applications - Processing…
21 Aug 2012, 14:42:57: 27 % Applications - Processing…
21 Aug 2012, 14:42:58: 28 % Applications - Processing…
21 Aug 2012, 14:43:02: 27 % Applications - Processing…
21 Aug 2012, 14:43:03: 28 % Applications - Processing…

cheers if it helps.
btw, I'v got pissed by nokia more and more each time.
suffering...