Blue Screen in Vista and not in Windows 7?

[chandrika]

I have been getting the blue screen alot in Windows 7, but it is since installing Ubuntu as well, and seems to occur having been in Ubuntu, then restarting and booting Windows 7, then blue screen of death comes, but rectifies itself on another restart.

[zippock]

when people install 2-3 OS, 2-3 antiviruses they often see blue screen)

[pixelbob]

Haven't had any BSOD issue with Win 7 no lock ups and haven't encountered any software incompatibility.