Is anyone else having the same problem? I am running Leopard (had to revert back from SL b/c of blacklisted apps). I just bought Parallels 4 and discovered that copy and paste function will no longer work as in Parallels 3. It also freezes up my programs such as Access. I reinstalled parallels tools and it will not fix the problem. I run in windows mode, and it did not help. As someone who relies on constantly using copy and paste between PC and Mac to get the daily work done, I am in desperate need of an answer. Can I go back to Parallels 3 without having to reinstall my virtual machine and all the apps on there? Can I get my money back from Parallels? Would some one please help me?