Have those apps been updated for 10.6? I was going to suggest a command in Terminal but I don't know if it still is OK. For those interested:
1. Type sudo rm -rf (leave a space after sudo, after rm and after -rf).
2. Drag the offending item into the Terminal window; the path to it will appear.
3. Press Return and type your administrator password. It will appear as if nothing is happening but that's a security measure to prevent onlookers from reading your password.
4. Press Return again.
5. Type exit, press Return, and quit Terminal.
I assume that those apps do the same thing via a script but everyone should be warned: A typo in Terminal can be dangerous and that command (#1 above) is one of the most dangerous things that you can do if you don't do it right.
Does anyone know if that command works in 10.6?