Topic: "Audacity already running" problem


I'm running ubuntu 12.04 with a UA-25 EX.
Audacity worked for a few times. But suddenly I get the warning message "The system has detected that another copy of Audacity is running...." and I can't open it. I killed the task, and I reinstalled and rebooted a few times too. Any idea?

Please help.

I didn't find the right solution from the Internet.

References: … mp;t=67814
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