I had the same problem after upgrading to 9.10 from 9.04 I then tried to run synaptic package manager and it reported that I had to run the following command: sudo dpkg --configure -a I tried installing an application under the Ubuntu Software Center again, this time I got the following message: "I wasn't able to locate file for the linux-image-2.6.28-16-generic package. This might mean you need to manually fix this package." I went back into the synaptic package manager and did a complete removal of linux-image-2.6.28-16-generic which isn't the kernel version that is being used. After that I was able to install applications using the Ubuntu Software Center.
I hope this helps. -- Ubuntu software center says waiting for other software managers to quit when none are open https://bugs.launchpad.net/bugs/464020 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs