If you do lots of graphic intensive programs, or programs that require high computational power, such as algorithms or videos. This could cause that problem, also a thing windows does that you might look at, if you have more than about 6 icons next to the clock (on a desktop, its more for laptops). You should look at what programs are there, and do they need to be there. Some people refer to this a preload for programs, its supposed to help the programs you use launch quicker, but if your virtual memory is cut, then it defeats the purpose.

V/R
ID