Debian 64 freezes

[pietia .moo]

hi.
I'm trying to use Debian on my Asus laptop (a6tc, Turion x2 64 bits). Few times every day my Debian freezes. I can make mouse's pointer tochnge position, but i cant do anything :/ ctrl+alt+1 does not work.
I was trying to use nosmp, noacpi, nolapic - still is bad :/
Pietia