On my desktop I have installed vmware server 2 itself indeed, but not on my laptop.
Code:
# rpm -qa | grep -i vmware
VMware-server-2.0.0-122956
Also the vmware server 2 rpm was already installed before the upgrade to RC1 and at that time there were no issues at all.
So it seems it must have something to do with the RC1 in combination with the vmware server console plugin for firefox.
Now that I think of it:
on both my laptop and my desktop pc I already had installed the vmware plugin, but after the upgrade to RC1 the vmware UI asked me again to install the plugin.
If I'm not mistaken RC1 has an updated version of firefox in comparison to Beta5, so probably that's the reason why I had to install the plugin again.
On my desktop I think I also noticed that the console plugin that was installed before the upgrade to RC1 was grayed out accompanied with a message like "incompatible with firefox 3.0.4"
Unfortunately I noticed this at the time the "new" plugin was being installed so I could not remove it anymore prior to installing the new plugin