Report system problem window requests password
I am using Ubuntu 12.04 LTS.
A window popped up asking me to report a system problem.
Obligingly I clicked on a button "Report problem".
The next window asked me to enter my password, which, foolishly, I did.
For all I know I have inadvertently installed a keyboard logger or some other malware.
How can I know whether a password request is bona fide?
Should I wipe my disk and reinstall everything?