FWIW, deleting a file related to the software center seemed to resolve the problem:
Dmesg output: [36001.147151] Valid eCryptfs headers not found in file header region or xattr region, inode 26480627 [36001.147155] Either the lower file is not in a valid eCryptfs format, or the key could not be retrieved. Plaintext passthrough mode is not enabled; returning -EIO nickfarr@Edwards:~$ find -inum 26480627 ./.cache/software-center/rnrclient/reviews.ubuntu.com,reviews,api,1.0,reviews,filter,en,any,any,any,skype,page,3,helpful,,abad90c03c6324790656169a4909c053 Removing the file fixed the problem... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/970627 Title: expunge-cache.py crashed with IOError in _cleanup_dir(): [Errno 2] No such file or directory: '/home/username/.cache/software-center/piston- helper/rec.ubuntu.com,api,1.0,recommend_app,multiget,,2442bcf345374a73360143bd52431ab5' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/software-center/+bug/970627/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs