I'm not sure how to link threads but it seems to me all these are describing the same behaviour - 3g connection icon shows but connections just time out.

http://talk.maemo.org/showthread.php?t=52886
http://talk.maemo.org/showthread.php?t=52916

I was wondering whether to raise a bug, but maybe it's best to wait until after PR1.2? Interesting we all decided to raise this almost the same day :-)