Photoshop Mem. Usuage increase

Hi,
I was wondering if anybody can help me.
I have Photoshop CS and it's been runing well. I believe it was running when 'doing ctrl/Alt/Del to checl processes' around 30,000K or so. But recently I've noticed that the Memory Usuage is at 99.524 before working on any doc. I'm not sure if I tweaked something my computer and I'm sure I didn't tweak anything in Photoshop.
Could someone reply with a few suggestions.
Thank you.

Please post in the correct forum... Moving.