Prashant, I think a couple different bugs may be happening here and in other reports... in any case, there are people complaining of your error in this bug: https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/153980
Prashant, I think a couple different bugs may be happening here and in other reports... in any case, there are people complaining of your error in this bug: https:/ /bugs.launchpad .net/ubuntu/ +source/ update- manager/ +bug/153980