Mac OS X forum: Alert Magican, and request for help

I made the mistake of installing some new software, supposedly a cleaning utility called Magican, which I think may be some kind of malware. Immediately after running it, I began to have problems launching certain applications. I tried to remove it and all the things it installed, but it has not been easy. The console now shows be a never-ending stream of messages such as those below, a new one every several seconds. I should say that I also once had installed MacKeeper, but I thought that it had long since been eradicated.

FWIW, I have combed through all my Library files for Launch items and demons, startup items, gone through my Accounts startup items and attempted to find invisible files, searching on zeobit, MacKeeper, Magican, castle, etc. The Activity Viewer shows nothing running that seems to be associated with any of these. Any thoughts on how to get rid of this stuff would be much appreciated.
I'm running OS X 10.6.7 on a MacBook 5,1


12/1/11 6:38:55 com.apple.launchd.peruser.501[162] (com.zeobit.MacKeeper.Helper) Throttling respawn: Will start in 10 seconds

12/1/11 6:26:59 com.apple.launchd.peruser.501[162] (com.zeobit.MacKeeper.Helper[852]) posix_spawn("/Applications/MacKeeper.app/Contents/Resources/Helper.app/Contents/MacOS/Helper", ...): No such file or directory

12/1/11 6:26:49 com.apple.launchd.peruser.501[162] (com.zeobit.MacKeeper.Helper) Throttling respawn: Will start in 10 seconds

12/1/11 6:26:32 com.apple.launchd[1] (com.magican.castle[843]) posix_spawn("/Library/Application Support/Magican/McDaemon", ...): No such file or directory

12/1/11 6:26:42 com.apple.launchd[1] (com.magican.castle[847]) Exited with exit code: 1

12/1/11 6:27:02 com.apple.launchd[1] (com.magican.castle[853]) posix_spawn("/Library/Application Support/Magican/McDaemon", ...): No such file or directory