I had problems with the 5.22 drivers, SOF crashing, agp disabled, d3d games running slow... Upgraded my agp drivers to 4.03 and everything is running great now!

Something for all you with VIA chipsets to try.

Hopefully it makes a improvement for you also

P3-450
256Meg pc100
Soyo 6vba-133
Viper 770 AGP Non-Ultra
Adaptec 2940U Scsi
panasonic 7502 cdr
SB Live
Toshiba SD-M1302 DVD