said by Somnambul33t :

all my HL2.exe games crash when exiting, but it's no big deal. it's only the VIsta error popup that the game crashed and only pops up when i exit the game and am loading the desktop. it doesnt cause settings to not save and it doesnt bother me. i hear it's pretty widespread.

no other issues at all...

hrm, except when Friend01 sens me a chat msg the popups in the bottom right corner are off-screen and i cant see the actual message without loading the community overlay. really annoying and happens in all steam games atm. no clue if it's related to Vista, 64-bit, or what; i cant find any info about it online