My iMac has been crashing lately. The screen goes beige and then I have to press a key to restart. These are logs from Console:
12/3/12 9:16:57.408 PM com.apple.launchd.peruser.505[359]: (com.divx.agent.postinstall) Unknown key: LimitToSessionType
12/3/12 9:16:57.408 PM com.apple.launchd.peruser.505[359]: (com.spotify.webhelper) Unknown key: SpotifyPath
12/3/12 9:16:57.408 PM com.apple.launchd.peruser.505[359]: (com.apple.gamed) Ignored this key: UserName
12/3/12 9:16:57.408 PM com.apple.launchd.peruser.505[359]: (com.apple.gamed) Ignored this key: GroupName
12/3/12 9:16:57.410 PM com.apple.launchd.peruser.505[359]: (com.apple.ReportCrash) Falling back to default Mach exception handler. Could not find: com.apple.ReportCrash.Self
12/3/12 9:16:57.414 PM loginwindow[42]: Connection with distnoted server was invalidated
12/3/12 9:16:57.458 PM distnoted[363]: # distnote server agent absolute time: 89.804066043 civil time: Mon Dec 3 21:16:57 2012 pid: 363 uid: 505 root: no
12/3/12 9:16:58.624 PM talagent[377]: _LSSetApplicationInformationItem(kLSDefaultSessionID, asn, _kLSApplicationIsHiddenKey, hidden ? kCFBooleanTrue : kCFBooleanFalse, NULL) produced OSStatus -50 on line 623 in TCApplication.m
12/3/12 9:16:58.624 PM talagent[377]: _LSSetApplicationInformationItem(kLSDefaultSessionID, asn, TAL_kLSIsProxiedForTALKey, kCFBooleanTrue, NULL) produced OSStatus -50 on line 626 in TCApplication.m
12/3/12 9:17:07.774 PM com.apple.launchd.peruser.505[359]: (com.prosofteng.DGMonitor[442]) Job failed to exec(3). Setting up event to tell us when to try again: 2: No such file or directory
12/3/12 9:17:07.774 PM com.apple.launchd.peruser.505[359]: (com.prosofteng.DGMonitor[442]) Job failed to exec(3) for weird reason: 2
12/3/12 9:17:07.774 PM com.apple.launchd.peruser.505[359]: (com.tvmobili.artwork[441]) Job failed to exec(3). Setting up event to tell us when to try again: 2: No such file or directory
12/3/12 9:17:07.774 PM com.apple.launchd.peruser.505[359]: (com.tvmobili.artwork[441]) Job failed to exec(3) for weird reason: 2
12/3/12 9:17:07.784 PM com.apple.launchd.peruser.505[359]: (com.apple.afpstat-qfa[440]) Job failed to exec(3). Setting up event to tell us when to try again: 2: No such file or directory
12/3/12 9:17:07.784 PM com.apple.launchd.peruser.505[359]: (com.apple.afpstat-qfa[440]) Job failed to exec(3) for weird reason: 2
12/3/12 9:17:07.784 PM com.apple.launchd.peruser.505[359]: (com.adobe.ARM.202f4087f2bbde52e3ac2df389f53a4f123223c9cc56a8fd83a6f7ae[454]) Job failed to exec(3). Setting up event to tell us when to try again: 2: No such file or directory
12/3/12 9:17:07.784 PM com.apple.launchd.peruser.505[359]: (com.adobe.ARM.202f4087f2bbde52e3ac2df389f53a4f123223c9cc56a8fd83a6f7ae[454]) Job failed to exec(3) for weird reason: 2
12/3/12 9:17:07.897 PM com.apple.launchd.peruser.505[359]: (com.adobe.CS4ServiceManager[449]) Job failed to exec(3). Setting up event to tell us when to try again: 2: No such file or directory
12/3/12 9:17:07.897 PM com.apple.launchd.peruser.505[359]: (com.adobe.CS4ServiceManager[449]) Job failed to exec(3) for weird reason: 2
12/3/12 9:17:09.453 PM Google Chrome[371]: Couldn't contact spell checker for U.S. English
12/3/12 9:17:10.926 PM com.apple.launchd.peruser.505[359]: (com.apple.mrt.uiagent[431]) Exited with code: 255
12/3/12 9:17:18.828 PM com.apple.dock.extra[459]: iPhotoDockTilePlugin: Unable to get dock badge information: connection timeout: did not receive reply
12/3/12 9:20:41.457 PM com.apple.launchd.peruser.505[349]: (com.divx.agent.postinstall) Unknown key: LimitToSessionType
12/3/12 9:20:41.457 PM com.apple.launchd.peruser.505[349]: (com.spotify.webhelper) Unknown key: SpotifyPath
12/3/12 9:20:41.458 PM com.apple.launchd.peruser.505[349]: (com.apple.gamed) Ignored this key: UserName
12/3/12 9:20:41.458 PM com.apple.launchd.peruser.505[349]: (com.apple.gamed) Ignored this key: GroupName
12/3/12 9:20:41.459 PM com.apple.launchd.peruser.505[349]: (com.apple.ReportCrash) Falling back to default Mach exception handler. Could not find: com.apple.ReportCrash.Self
12/3/12 9:20:41.464 PM loginwindow[42]: Connection with distnoted server was invalidated
12/3/12 9:20:41.477 PM distnoted[353]: # distnote server agent absolute time: 67.519251895 civil time: Mon Dec 3 21:20:41 2012 pid: 353 uid: 505 root: no
12/3/12 9:21:02.639 PM SystemUIServer[371]: could not update menu bar region, 1000
12/3/12 9:21:02.857 PM talagent[374]: _LSSetApplicationInformationItem(kLSDefaultSessionID, asn, _kLSApplicationIsHiddenKey, hidden ? kCFBooleanTrue : kCFBooleanFalse, NULL) produced OSStatus -50 on line 623 in TCApplication.m
12/3/12 9:21:02.862 PM talagent[374]: _LSSetApplicationInformationItem(kLSDefaultSessionID, asn, TAL_kLSIsProxiedForTALKey, kCFBooleanTrue, NULL) produced OSStatus -50 on line 626 in TCApplication.m
12/3/12 9:21:02.890 PM com.apple.launchd.peruser.505[349]: (com.apple.afpstat-qfa[417]) Job failed to exec(3). Setting up event to tell us when to try again: 2: No such file or directory
12/3/12 9:21:02.890 PM com.apple.launchd.peruser.505[349]: (com.apple.afpstat-qfa[417]) Job failed to exec(3) for weird reason: 2
12/3/12 9:21:02.890 PM com.apple.launchd.peruser.505[349]: (com.prosofteng.DGMonitor[419]) Job failed to exec(3). Setting up event to tell us when to try again: 2: No such file or directory
12/3/12 9:21:02.890 PM com.apple.launchd.peruser.505[349]: (com.prosofteng.DGMonitor[419]) Job failed to exec(3) for weird reason: 2
12/3/12 9:21:02.890 PM com.apple.launchd.peruser.505[349]: (com.tvmobili.artwork[418]) Job failed to exec(3). Setting up event to tell us when to try again: 2: No such file or directory
12/3/12 9:21:02.890 PM com.apple.launchd.peruser.505[349]: (com.tvmobili.artwork[418]) Job failed to exec(3) for weird reason: 2
12/3/12 9:21:02.896 PM com.apple.launchd.peruser.505[349]: (com.adobe.ARM.202f4087f2bbde52e3ac2df389f53a4f123223c9cc56a8fd83a6f7ae[431]) Job failed to exec(3). Setting up event to tell us when to try again: 2: No such file or directory
12/3/12 9:21:02.896 PM com.apple.launchd.peruser.505[349]: (com.adobe.ARM.202f4087f2bbde52e3ac2df389f53a4f123223c9cc56a8fd83a6f7ae[431]) Job failed to exec(3) for weird reason: 2
12/3/12 9:21:02.896 PM com.apple.launchd.peruser.505[349]: (com.adobe.CS4ServiceManager[426]) Job failed to exec(3). Setting up event to tell us when to try again: 2: No such file or directory
12/3/12 9:21:02.896 PM com.apple.launchd.peruser.505[349]: (com.adobe.CS4ServiceManager[426]) Job failed to exec(3) for weird reason: 2
12/3/12 9:21:03.152 PM com.apple.launchd.peruser.505[349]: (com.apple.mrt.uiagent[407]) Exited with code: 255
12/3/12 9:21:09.967 PM com.apple.dock.extra[458]: iPhotoDockTilePlugin: Unable to get dock badge information: connection timeout: did not receive reply
iMac, OS X Mountain Lion (10.8.2), 27", 3.2 GHz i3, 12 GB RAM