Sebastian:
Mine does. Quite often. It is very old and I really need a new one. I have been procrastinating on buying a new one; such as what kind and brand; lap top or desk.
Heck, my brand new computer takes the occasional dive. Twice yesterday!
If your present computer isn't maxed out on memory, make the investment. It will make your computer faster and more stable. Besides, memory is cheap these days!
Otherwise, procrastinate a bit more Sebastian. In the Windows world, this is a particularly bad time to buy a computer because they are all shipping with Windows 8, which is crapware that Microsoft is jamming down our throat. I paid extra to get a "business" model that shipped with both 7 & 8, and am less than ecstatic with it's performance so far. I'm just about done with Windoze!