I have a T61 with Windows Vista, 15" high resolution screen, 2GB memory and a 100GB hard drive. This unit "locks up" on a regular basis and have to turn it off an on again. It doesn't seem to be any one program that is doing it. It will lock with no applications open.
It appears the only recourse is to "reinstall" from the partition and rebuild my machine again but obviously I don't want to go there unless I absolutely have to.
Any other suggestions?