thanks everyone for the great comments on this forum
just wanted to let you know that what i call the most stable, faster and minimum memory consuming version of fim is out
changes:
V2.2.7 (21/6/2009)
* fixed reappear of new notifications
* toggle full screen by double click on upper bar
* fixed duplicate login error messages
* added option to auto load chat history (though it takes more time + data)
* embedded browser seems to be working fine on latest wm 6.5 builds
* added some features to support usage in QVGA smart phones (such as tab/arrows functionality)
* registry settings moved to HKCU (that's how m$ like it)
* long enter press sends message (only works from hardware keyboard)
* fixed pop up notifications (moved show/dismiss button to top)
* lower memory usage
full change log is on
xda
enjoy