Again my iMac randomly crashed while I was using it. Specs: 27" 2011 3.4Ghz i7 256GB SSD + 2TB (Hitachi) BTO 2GB 6970M 16GB of Corsair: http://www.newegg.com/Product/Product.aspx?Item=N82E16820145281 Apple Keyboard/Mouse. OSX 10.6.7 that came with the iMac. these random freezes started the day after i got my iMac a week and a half ago. it was fine for the last week as i was running a constant movie loop on it 24 hrs a day for a week straight and im wondering if its a certain application that is freaking out the iMac? It seems to happen when I have Steam launched in the background. not playing a game or anything but just there with my friends/buddylist there. I had the following apps open: FireFox with about 8 tabs Safari one window with two tabs and the other 4 tabs iTunes (latest) playing music Mail iChat Steam (latest) uTorrent (seeding data) What specifically happens im not sure but it freezes up the entire machine, NO kernal panic, the capslock key light doesnt register (Wireless or Wired keyboard), mouse completely frozen, itunes music skips and have to do hard shut down. its getting really damn annoying that this new machine is distributing these errors and I refuse tobring it into an Apple retail store or authorized provider as this is a replacement from a previous machine that was damaged at one of these locations. Soany advice on what logs to pull or how to diagnose it. i dont thinks its the memory as i tried it in a 15" MacBook Pro 2.2Ghz i7 2011 and it has been fine with that. couldnt replicate it much, its a very rare and random occurence but it has me wondering if its a conflicting software glitch or other hardware issue. any adivce would be great. === edit, this is the last log before the crash @ about 3:49PM MST and I restarted at about 3:50-3:51pm MST 7/3/11 3:46:12 PM [0x0-0x1d51d5].com.valvesoftware.steam surface_osx.mm (2755) : Assertion Failed: !"Current texture not set" 7/3/11 3:46:12 PM [0x0-0x1d51d5].com.valvesoftware.steam Assert( Assertion Failed: !"Current texture not set" ):/Users/rackadmin/buildslave/steam_rel_client_osx/build/src/vgui2/src/surface_ osx.mm:2755 7/3/11 3:46:12 PM [0x0-0x1d51d5].com.valvesoftware.steam SteamID: 76561198030128033, universe Public 7/3/11 3:46:13 PM [0x0-0x1d51d5].com.valvesoftware.steam surface_osx.mm (2755) : Assertion Failed: !"Current texture not set" 7/3/11 3:50:54 PM com.apple.launchd *** launchd has started up. *** 7/3/11 3:50:59 PM com.apple.launchd (com.apple.xprotectupdater) Exited with exit code: 255 7/3/11 3:51:00 PM com.apple.launchd.peruser.502 (com.apple.ReportCrash) Falling back to default Mach exception handler. Could not find: com.apple.ReportCrash.Self 7/3/11 3:51:01 PM com.apple.launchd.peruser.502 (com.apple.Kerberos.renew.plist) Exited with exit code: 1 should also note a 4pass of REMBER and an extended looped Apple Hardware test passed. I even ran the MaxCPU script to test out all the hardware and didnt even flinch. SO im wondering its perhaps Steam itself?