I upgraded from ubuntu 11.10 to 12.04LTS version. Mine is 32bit OS. I run virtual box on my machine. In virtual box i run bt5r2(64bit) version. When i was running 32bit version of bt5r2,it worked fine. But this 64bit version of backtrack just freezes my pc and i have to restart my pc.
But one thing i noticed is, i also run ubuntu 11.10 server Edition(32 bit). When i start backtrack first,it freezes my pc. but if i start ubuntu server,then backtrack it just runs fine.
I think memory allocation is the problem. I enabled Hardware Virtualization(VT-d).
my pc configuration:
- Intel® Core™ i3 CPU 540 @ 3.07GHz × 4
- 4GB DDR3 RAM