so recently my MBP had a little bit of a fit that resulted in the battery losing 50 % of its health in just over a day. the battery is just waiting to be replaced so for the mean time, im on mains only however, since then its been running pretty sluggish for what should be a pretty powerful machin (SR MBP 15.4" 2.4Ghz, 4gig ram, 160gb hdd) i installed a few new programs, as well as removing some old ones and old files. i installed light room trial which doesnt work at all. sketchup 6 and a virtual DJ. but even before then things seemed different. the dock seems sticky, expose is juddery, animations arent fluid, scrolling (with my crippled mighty mouse) web pages in FF is almost unbearable (yet isnt so bad in safari or opera). Parallels is now completely hopeless, its so slow, XP is really slow and trying to use solidworks is almost out of the question becuase its just so ****ing slow. and just now i played a divx video (350mb - 45min) which played less than smoothely (thought it could be a bad file) what has happened to my mac? how can i fix it? general performance just seems to be down across the board. it couldnt be todo with the battery not being in the machine could it?