Had a problem.

Vista 64

I put my computer to sleep mode but it came back almost instantly. From that point and based on suggestion from UT users everything pointed in the direction of faulty drivers for nvidia graphics card.

It was not because of the drivers.

I began removing stuff from startup programs (msconfig) and finally with all the testings it looks like Google Update was to blame for that problem.

Problem came back... Oh well

I'll get back to you on this one