Software Manager must be force quit to close
Hello. I use package manager to install program in linux mint 9. After using and closing the package manager, i run the software manager just to see what it is. I didn't install anything using software manager but when I try to close it, it just gray out. I have to force quit it just to close the window. It happens everytime I use the software manager. How can I fix this problem. Thank you in advance.
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