Vista sucks

I am getting very annoyed. The computer I got is a definite upgrade over what I had, but Vista is making it run so damned slow that it is like I am running a 1 GHz PC. My mic won't work in half my audio apps. I can't run any major app while I play WoW. My graphics driver crashes every few days, taking half my open apps with it. My explorer.exe has crashed about a dozen times, leaving me with no recourse but a hard reboot. my Anti Virus application runs poorly on Vista, and I haven't a hope of doing anything while it updates or scans. To say I am unhappy would be really an understatement, but unfortunately the warranty prevents me from wiping and installing XP like I want.