In your concrete case: you hit 10.6.5 beta issue. we are working on resolving it right now.
Yes, it was triggered altogether by 11826 + 10.6.5 and external storage. To return back to old 11822 behavior (and thus avoid triggering this 10.6.5 bug) you can use vm.mem_anonymous=0 boot flag in VM configuration.
External storage is just a hint for Parallels which algorithm is better to use: for external we use vm.mem_anonymous=1, for local vm.mem_anonymous=1.
Last edited: Oct 27, 2010