Okay, thanks for the reassurance.
I've gotten in the habit of updating drivers a lot when I first started getting NVIDIA's graphics cards. They tend to add new features and performance enhancements to earlier products sometimes generations down the line. Like the new FXAA mode that was just released and applies all the way back to the 8-series. Or many firmware updates that tweak a couple things to create some noticible boosts in performance.
Yeah, graphics drivers are usually the only ones that really need updating regularly (although I usually wait for the WHQL versions instead of using the beta's).