I own an Inspiron 1501, Turion 64 x2 TL-50, ATI Radeon Xpress 1150, 1 gig Ram and Vista Home Premium. Everything fully updated including drivers. Several apps and games are crashing out with Negative Delta Time errors, I understand this is to do with the dual core and also powersaving via clock speed etc.... What I want to know is anyone actually got a fix? Under XP MCE they all run fine on this rig, since upgradng to Vista they are total crud. I have tried all solutions I have come across. Set compatability mode to Win 98 or XP, no go. Tried several apps to lock it to uniprocessor mode, no go. Have tried setting CPU to always 100% power, no powersaving, aswell as switching off the cool n quiet in Bios, still no go. The interesting thing is that the error reports always list my CPU speed slightly different, ranging from 1590 mhz to 1602 mhz. I have tried a reinstall of the game, the most severely affected program, several times, aswell as a complete reinstall of Vista, still no go. Anyone else come across this? The game does work occasionally under Vista, and the game creator said it should work fine. When people said gaming performance on Vista could be quite poor I was not worried, I rarely game, but this is ridiculous.