In case you missed it, last week Giles made a major announcement in the Confluence forums. Here’s the skinny:

We are proud to announce that Atlassian officially supports non-clustered installations of Confluence 3.0 and later on VMware.
Although possible, we do not recommend running versions of Confluence prior to 3.0 on VMware, since Confluence 3.0 resolved many performance issues that were present in earlier versions. For more information about the performance improvements in Confluence 3.0, please refer to:

Be aware that we do not support clustered installations of Confluence on VMware.
For the results of our VMware tests, please refer to “Running Confluence in a Virtualised Environment” in the Confluence Documentation:

Confluence on Virtualised Environments – The...