VS.NET compiling slowed by my virus checker

I wasn’t really surprised to find that my virus checker slows my VS.NET compilations somewhat, but I was surprised by exactly how much. With Macafee’s real time scanning on, my P4 with 720mb of RAM compiles about the same speed as the P600 with 128MB of RAM I was using before. When I turn off the virus checker it compiles quicker than I get bored of waiting.. :)