After working fine earlier today, receiving this message now: Parallels Desktop failed to allocate the specified amount of memory. Please restart Parallels Desktop and try again. To avoid this problem in the future choose from the menu: Parallels Desktop > Preferences. On the Memory tab select the "Enable virtual memory preallocation" option. I have been running version 5608 for months with no problems, including earlier this morning, but now it won't do anything. I have a big presentation tomorrow and would prefer not to have to go to Boot Camp with the re-registration required on the switch-over. EDIT: Following the instructions above does nothing... Here is my machine (running Windows XP on the VM): Model Name: MacBook Pro Model Identifier: MacBookPro4,1 Processor Name: Intel Core 2 Duo Processor Speed: 2.5 GHz Number Of Processors: 1 Total Number Of Cores: 2 L2 Cache: 6 MB Memory: 2 GB Bus Speed: 800 MHz Boot ROM Version: MBP41.00C1.B00 Any help is greatly appreciated!