I had the same thing happen to me this afternoon. Running on CentOS-5 x64 with six NICs. All of my NICs were renamed.
Good to see i am not the only one. I have found a temporary solution. If you edit the netmap.conf file you can change the names given to the adapters in there to what ever name you would like and then hit refresh on your web ui and the changes are reflected. How ever once you run the vmware-config.pl script again it will change the names back.
Just something to keep you going if your kind of stuck.
Oh and I neglected to mention my box is an x64 based box running CentOS x64 same as yours
Yeah, it was easy to resolve but did cause a host to come up without a NIC after the upgrade...
I had the same issue under Ubuntu 8.04 Server 32 bit.
Thanks for the workaround.
The workaround for the issue is to edit "/etc/vmware/netmap.conf" file:
/etc/init.d/vmware stop Stop VMware services at first
vi /etc/vmware/netmap.conf do customization
Then, logon using web UI, you could see the changes. Enjoy VMserver!