Hi Kamulko,
Try the following go to program files and to Mozilla FF,
take the shortcuts from the desktop, or start bar. Create new shortcuts and see what it does.
Second try: create a new profile at
http://www.mozilla.org/support/firefox/profile#new Another option is delete all
of Firefox, and reinstall from the setup program.
Before that save your profile files somewhere else, bookmarks.html cookies.txt hostperm.1 signons.txt & key3.db chrome\user\chrome.css & userContent.css, all this is copied WITH FIREFOX CLOSED
because else as you have noticed it overwrites all those files at shutdown.
Sure, you will FF soon after this, all is well that ends well,
Loads of success,
your friend polonus