Dear Customers, Apple has recently released a 10.4.10 update for Mac OS X. Among its features it contains some serious modifications to the USB devices handling code. If you are a happy owner of PD 3.0, it is safe to upgrade to 10.4.10 now. We are not aware of any compatibility issues. If you are a happy owner of PD 2.5 (both builds 3188 and 3212), it is not recommended to update to 10.4.10 now if your production environment relies on USB support in PD. Thereâ€™s a known compatibility problem with Parallels Desktop build 3188 and 3212 USB implementation and Mac OS X 10.4.10. We already have a fix for this issue and the new Parallels Desktop 2.5 will be available shortly to deal with it.