I am using Ubuntu 12.10 and Netbeans IDE 7.2 and this was all working fine until yesterday. Now i'm not able to run netbeans as normal user, only as administrator. As normal user the program launches but notting appears on screan.
If you are confident that, with the account "superadmin" the netbeans working properly
It seems proper affirm that your user workspace is corrupted.
You can re-create a new workspace for user:
$ rm -rfv /home/userdir/.netbeans
Attention with this command you will lose information group projects and open projects. But do not lose, project data, you should just reopen them or create new groups.
Or you can move your workspace like this:
$ /path/to/netbeans/bin/netbeans -userdir /path/to/new/userdir
Or if you prefer to read up on what happened can be found in the corresponding logs directory:
so you can decide if you can solve the problem in another way, without recreating your workspace.
It is also possible that for some strange reason, the user has lost the execute permissions on some netbeans folder.