Tried some days ago 2.42 version, yesterday 2.45... same trouble happens, very often leaving applications TW4 is missing... I mean, it really vanish without any FC message... and there's no way to restart it, I see only an empty wallpaper screen.
And I must restart the phone to regain UI. Really weird.
Of course I tried to reinstall many times, starting from scratch with all wipe possible.
Other annoying thing is that with 2.45 Google auto restore apps won't work.
Pity, because this ROM is the best resemble to what Samsung should have done on i9000... if only they had released ICS.