Nokia...did u come up with this answer yourself or did u look it up somewhere. If u looked it up, please post where u got the information from. If you came up with it yourself, good job.

Tidal, a good way to keep avoid getting that message is also to close unused programs and processes. press ctr alt delete and see how many processes you're running. Are u usually playing a game when the message comes up? Also, run spybot Search&Destroy to look for spyware which use a lot of memory. weatherbug is one of them. 512Meg is plenty...thats how much I have on my comp and the only time I get the message is when I have kazaa running, antivirus doing a full scan and while playing a game a the same time. As a side note, even if the spybot wont help your situation its always good to keep your system clean of garbage.