Workstation not recognising reserved RAM

Hi,

I'm using Workstation 8.0.5 on a Windows 7 Enterprise host, on which I have 16GB of physical memory installed.

My reserved memory settings in Edit --> Preferences --> Memory is set to 12076MB and I have the 'Allow some virtual machine memory to be swapped' radio button checked.

I'm trying to start a 64-bit CentOS VM image, for which I have set the allocated memory to 8GB.  My host task manager shows I have 10GB of physical memory currently available.

When I try to power on I get the message:

"Not enough physical memory is available to power on this virtual machine with its configured settings.

So it seems to think I have less than 4233MB available to all VMs, when I have actually set this to about 12GB in the Workstation settings.

Any idea what's going on?

Cheers.