Comment # 6 on bug 980292 from Stefan Hundhammer

(In reply to Lukas Ocilka from comment #4)
> And what if we just warn the user that the same Yast module already runs?

That doesn't really change anything for the scenarios from comment #2. If
anything, we'd need to offer the user to terminate that other YaST instance
(e.g. send a SIGTERM, after a timeout a SIGKILL).

Otherwise we'd end up in the same unfortunate scenario as Firefox does so
often: The application flatly refuses to start, and the user has to hunt down
processes to terminate manually.