A new reliability update for Vista is available on Windows Update: KB946041
this update includes the following improvements on a Windows Vista-based computer:
* This update improves the reliability of certain portable computers when you resume the computers from sleep by opening the lid.
* This update improves the reliability of updates that are installed in the system, and it addresses error code 0x8007000b.
* This update addresses some crash situations that occur when the computer is running media playback programs that use several popular codecs.