Just a bsic question really - what is an ideal amount of free disc space that I should have % wise? Just had problems with one of my pc's and it was due to small amount of free disc space. have looked at the other 2 I have and they're getting full as well.
It depends on how much space you need, but from the sound of it your best bet would probably to buy an external HD and transfer some of your stuff on to it. The fuller your HD the harder your computer has to work