Now if you are facing issues with eclipse on Fedora 12, you need to do the following depending on how you start eclipse.
You will need to export GDK_NATIVE_WINDOWS=true before you start eclipse.
Relevant eclipse bug: https://bugs.eclipse.org/bugs/show%5Fbug.cgi?id=291257
If you use command line to start eclipse:
Create a script that looks as follows:
If you use a Desktop shortcut under KDE (Dolphin):
Then in the Properties dialog, under the application tab do the following:
export GDK_NATIVE_WINDOWS=1; /opt/eclipse/eclipse -showlocation -data /home/xxx/workspace
Please do not forget to the rename the workspace directory propertly. Also verify whether your eclipse installation directory is /opt/eclipse or change it accordingly.