iHAS322 freezing my computer?

i have noticed that whenever i burn with my 322, my computer will freeze for a few seconds around the time the lead-in is being written. i can move the mouse, but no apps respond. my music even pauses for a few seconds. i’ve even had this happen during quality scans. has anyone experienced this? here are my specs:

E8400 @ 3000
GIGABYTE P45 UD3P
4096 DDR2 800
WD Caviar Black 1TB
Thermaltake TR2 RX 850
ATI HD 4850 512
X-Fi Platinum

i have all my SATA drives plugged into the p45 chipset ports. the lg, pioneer, optiarc and samsung do not exhibit the same behavior. i have a true lite-on and an hp rebadge (dvd1160i) of the iHAS322 and they both do the same thing.