I'm running Version 5 of Parallels Desktop on a MacBook Pro. Parallels starts up fine and I get a dark window with a dark background and the Microsoft symbol on the left, and, to the right of this symbol, the name of my Windows 7 virtual machine and, below that, the phrase "Click to start" (all text in white letters). When I click on "Click to start", about 2 out of every 3 times, I get some activity in this window suggesting that Windows 7 is starting up, then the activities cease and Parallels hangs. At some point I can hear the Windows 7 chime, indicating that Windows 7 has successfully started up, even if I see no sign of it in the frozen dark screen on my desktop. If I then, via a command-option-escape key sequence, force Parallels to shutdown, then restart Parallels again, Parallels starts up normally, but instead of the black screen with the Microsoft symbol on the left, I see, in the same window, the Windows 7 Desktop asking me to login. For this point on, all works fine. This problem startup happens only about two-thirds of the time. It is, however, annoying and a time-waste, and I sure would like to see it go away.