Perhaps something like Vista's UAC or an Anti-Virus program is randomly blocking it from accessing no$gba...or perhaps you use an app like ATI Tray Tools which changes the global hook and it then can't use it's way of targeting and piggybacking onto no$gba.
__________________
Intel Core2Quad Q9550 (2.83Ghz stock) | ASUS P5Q | 2x2GB Transcend JetRam DDR2-800 | ASUS ENGTX260\HDTP\896M | Windows Vista Home Premium 64bit SP1
The Champ has retired but may his Legacy live on FOREVER !!!!
Get it right fools! The glass is HALF-EMPTY, not half-full!!!
!!! WARNING: Emulation requires a brain !!! WARNING: Emulation =/= Piracy !!!