Ok, what the hell has happend, no ones had access to my mac and no one around here would know what to do to it anyways. Basicly i installed the new itunes update and it said couldn't find the music file for three times then it worked, like huh? Then this morning firefox refuses to launch and DMG's now refuse to open without me opening disk utility, lastly one of the pref panes in my system pref's has disappeared I found it and clicked it and didn't appear in system preferences. Seriously what the hell? No one has had access to my mac either, I did change my languages to include Gaelic (Which I can partially speak) but that was after the itunes update. I'm really confused now, I know a fair bit about computers so I know what I'm doing. Thankyou in advance Just to add on, firefox gives me a bad sigbus error, I've had these before on other programs due to fonts. No new fonts have been installed since. Ok now theres only 3 fonts on my mac! What is going on?!