I had this problem with 3 applications I removed from my mac:

1. Entourage
2. Transmit
3. Yojimbo

For transmit, the solution is in their website, it’s a simple line to copy in your terminal

~/Library/Application\ Support/Transmit/TransmitSync.app/Contents/MacOS/TransmitSync –unregisterClient

While for the 2 others you won’t find a solution in their website, but there’s an alternative (software) solution called Syncrospector (you can find it at the Apple Developer Connection site). Or write to me and I’ll send you a copy if you’re in an urge.

Download Synchrospector

Posted in 3rd Party Software, Address Book, iSync & iCal, Macintosh Tips & Help, dotmac & MobileMe