my system is an old one
IBM 2.6 Ghz
it was doing just fine but from some time it runs slow like when i minimize a window or close it, it drops like a water fall slowelly and some times it litterelly halts and shows a massage "windows explorer not responding"
It's probably the system that is short of memory and having issues running several hungry programs all at once resulting in lag, etc. You may also want to do the usual like clean-up the system clutter, etc.