Or even Windows doing its usual slow down. Its also one of those natural things that things seeem to slow down when you are used to them
Teh first time I rode my first 400cc bike I thought it was amazingly quick, 2 months later I was convinced it was broken, a quick ride out with mate on back and he confirmed it wasn't!
, same with my 600 and my 1000cc ones, we always seem to want MORE!
one way to test it is to download and install SiSoft Sandra. Its a benchmarking tool that will test your PC and give you comparisons to 'known' standards. e.g. it knows what an Intel 2.4Gig P4 CPU shoudl do so if thats what you have you know thats asomething is wrong if yours doesn't match up. its also good for testing Hard disks/CD/DVD/Memory etc.
The freeware version is slightly cut down but does enough to get a good idea if anything is wrong.
SiSoftware Zone