I'm running a couple Windows guests and an OS X 10.8.2 guest on my Fusion 5.0.3 setup. The Windows guests run fine for as long as I leave them up, but the OS X guest will unpredictably enter a frozen state where the guest is using 100% of the one cpu core it has access too.
When this happens, there is nothing running on the guest. It's just sitting idle.
My machine is a MacBook Pro 17" 2011 with 16gb of ram and vertex ssd.
Is anyone else out there having this problem with OS X Guests?