hey guys, was wondering if someone could help me with a problem i've been having for the past 1.5 - 2 weeks, i'll try to specify problems as much as i can but its probably going to sound like some vague hardware issue: i used to be able to run 7-10 applications without any delay, but now if i run multiple programs [ie - skype, safari, word, itunes] i will get the rainbow spinwheel, sometimes this resolves after i leave it for a min or 2, sometimes it doenst, and i have to restart my laptop (by holding down the power key). sometimes even if i am surfing the web, while a site is loading the spinwheel appears. other times my laptop will just freeze w/o warning [however i can move the mouse, but hovering it over the dock produces no results like the magnification or clicking on them cannot open any). even while typing this i get the spinwheel. yesterday when using itunes to play music the music randomly started skipping for no apparent reason, adn then when i restarted it was stuck on the screen w/ apple logo for quite some time ( i had to turn it off again by holding the power button) my mbp info: purchased in aug 2009 with 2.26 GhZ and 4 gigs or RAM, running 10.5.8 OSX (Leopard). I have deleted a bunch of movie files to free up space, but only have about 30 gigs free now. right now activity monitor says: 730 MB free, 570 MB wired, 1.6 GB Wired, 820 MB inactive, ~3 GB Used. ---not sure why 3 gb are being used bc right now i only have safari, and activity monitor open when the problem first arose and i searched google/this forum i realized my laptop was Indexing which was slowing everything down immensely through processes such as 'mds' and 'mdworker' i now try to keep my open apps to a minimum but still run into the problem if my laptop is on too long (meaning more than 6 hrs, even tho i used to be able to keep it running for days at a time w/o issues)...and keep my downloading of music/movies low as well. i was planning on upgrading my ram to 8 gigs soon, but am now wondering if i should backup my harddrive and reformat my osx. this problem is strange bc sometimes my mbp runs smoothly but then all of a sudden runs very erratically and stalls (even something as small as right-clicking causes delay/spinwheel) hope someone can help, i'll try to answer any questions or list any more details that come up. thanks a ton.