Parallels 8 broke the Coherence + multiple monitors mode. The symptoms are that a window will no longer come forward with a alt-tab and sometimes even clicking on the window doesn't bring it forward. I installed PD9 with the hope that they knew of the issue (it's been complained about here and I and others have opened trouble tickets on it) and that they fixed it in 9. Well for 2 days everything worked well and then today (day 3 of a running VM) I was no longer able to get background windows to come forward. What's interesting is it appears that Windows Explorer also hung and it had to restart itself. A reboot gets me back to a working system with Coherence enabled but sadly going to PD9 didn't fix the only issue I have with Parallels (really, this is my only complaint). It should be note that when Coherence is working it is so better than what Fusion offers. PD9-OSX 10.8.2- WinXP