Hello all, I recently bought a seagate momentus xt 750gb to replace my stock 5400rpm drive in a penryn (black) Macbook 4.1 (early 2008). Everything went well with the installation of Snow Leopard, plus all of the latest updates have been installed. I've been having some issues with graphics however, whenever I'm running skype along with firefox or safari I get weird graphical glitches and crashes of both Firefox/Safari and Skype (everything is the latest version) ..sometimes only Skype crashes...But the crashes are quite often and it gets annoying. I've been using the built-in screenshot shortcut to get images to show you guys what I mean, I will post later... Anyone else been having similar problems? btw I've looking around for a firmware update but didn't find any. Are there any? I am right now running the 64-bit version of SL using the 6 and 4 shortcut to just see if I also get the same problem as in 32-bit.So far so good. I'll try to post the pics to let you guys see. here are some pics this is safari this is firefox The images are cropped screenshots Thanks in advance.