Enter the damn DHCP IP Address in your /etc/hosts and map it to your hostname

$ sudo vi /etc/hosts

# Assuming DHCP that my machine pulls 10.4.11.11. and hostname is wimbledon
10.4.11.11 wimbledon

This will solve several of your problems. Some of the Linux pain points.

For me they were,
NX Nomachine was not able to connect to the server. Server Configuration Error and some weird errors in the details.
P4 Eclipse Plugin was coming back with perforce error: unable to determine client host name
In my Java product, I was getting UnknownHostExceptions
and several others…

Well there you go! This is a MUST DO after Linux installation.

Sometimes you want to avoid clutter in your Eclipse Workspace Launcher and might want to remove obsolete workspaces.

Clean up the value for RECENT_WORKSPACES key, located in the org.eclipse.ui.ide.prefs file.

$ECLIPSE_HOME/configuration/.settings/org.eclipse.ui.ide.prefs

Restart eclipse and it should be gone.