Why Opera crashes all the time?

Hello!

Why Opera (v9.02 & newest beta) crashes all the time? I can use it about 2 min, so little hurry write this. Maybe wrong forum but hope you don't mind. I'm using BullGuard (Bitdefender and Outpost) and Prevx1.

EDIT1: Hey don't crashes here. Maybe Flash or something is problem? I have fresh and clean Windows XP SP2 installation + all Critical & Recommend updates.

EDIT2: I don't have Flash Player installed because I don't need it. I have disabled all plugins in Opera. What else I can try?

EDIT3: Maybe working now. I disabled GIF/SVG animations, JavaScript and sound in Web Pages (all except Java).

 

Reply now because so many edites. If Flash is problem and I don't like to install it how I can block Flashes. Is there some AdBlock pluging for Opera which do that?

EDIT1: I'm using now modified urlfilter.ini file and everything works fine.