Sorry for the reply delay! :)
I'm on Sony Ericsson Xperia Arc S, using this ROM: http://forum.xda-developers.com/showthread.php?t=1565475
And this language pack: http://www.nexus-lab.com/miui-rom-italian-packs/?rom_id=136&version=2.5.18#LP2143LT18
Also, I forgot to mention that the crash...