IMac not sleeping

Over the last week I noticed that my iMac was not going to sleep or even would wake up from sleep even after being forced to sleep. Today I logged into the console and saw this:
Oct 31 11:01:56 barnes-fichters-computer-4 com.apple.launchd[1] (com.app4mac.CheckUpAgent[2331]): posix_spawn("/Applications/CheckUp.app/Contents/MacOS/CheckUpAgent", ...): No such file or directory
Oct 31 11:01:56 barnes-fichters-computer-4 com.apple.launchd[1] (com.app4mac.CheckUpAgent[2331]): Exited with exit code: 1
Oct 31 11:01:56 barnes-fichters-computer-4 com.apple.launchd[1] (com.app4mac.CheckUpAgent): Throttling respawn: Will start in 10 seconds
This message repeats itself over and over again... how do I disable the checkupagent from trying to start? I do not have checkup installed on my drive.
Regards,
Charlie

Hi Charlie
For the sleep/wake problem reset your iMac's SMC as instructed in the first article and then restart holding the (Command-Option-P-R) keys to reset the PRAM, the second article.
http://support.apple.com/kb/HT1543
http://support.apple.com/kb/HT1379
CheckUp or something carrying CheckUpAgent got installed on your iMac and there are several way to remove the Library/LaunchDaemons/com.app4mac.CheckUpAgent.plist.
http://www.app4mac.com/forums/index.php?action=articles;sa=view;article=6
http://tech.karbassi.com/2008/01/03/checkup-how-to-uninstall/
Also see > http://discussions.apple.com/thread.jspa?threadID=2041656&tstart=0
Dennis

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