Hi Pascal, Thanks for your advice.
There is no problem with my network and I have already tried more than 20 times (at different timings on different days) to upgrade. I received error message each time. So I do not think the error is due to temporary network problem. Prad -- Error when upgrading from Ubuntu 7.04 to 7.10 using Update Manager https://bugs.launchpad.net/bugs/204958 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