Parallel tools did not fix mouse release problem

I had to install Parallels 6 because I upgraded to Lion. There were many issues with the upgrade, so I finally just deleted the old version and all application settings, and installed fresh. I turned off crystal, and did some configuration settings that finally got everything working the way I wanted it except for the mouse. I still have to constantly hit Control+alt to release the mouse when moving from windows XP back to Lion. I have installed Parallel tools twice, and seen no errors, but it does not fix the problem.

Any other ideas?