I’m now happily using VMWare Workstation 6.0 to check some build errors in Ubuntu Gutsy without risking an upgrade of my actual system.
I have used VMWare Workstation 5.5 lots, but the need to rebuild the kernel module with vmware-config.pl every few weeks (when the Ubuntu kernel was updated automatically) tended to break my habit, particularly when there are build errors due to changed Linux kernel headers. And I couldn’t get either Ubuntu Feisty or Ubuntu Gutsy to boot in Workstation 5.5 after installing them inside a virtual machine. Maybe that’s something to do with the hack that’s needed to build the vmware kernel module on an up-to-date Ubuntu Feisty. There was no such problem with 6.0, at least for now.
I noticed that Ubuntu has vmware kernel modules available via Synaptic/apt-get, but I couldn’t get them to install without errors, maybe because I already had them installed manually. I don’t know if vmware’s installation script has any way of using or getting them from the Ubuntu repository instead of building them.