Possible Duplicate:
Trouble downloading updates due to “Hash sum mismatch” error
I'm trying to upgrade from 11.10 to 12.04 using the Update Manager. I keep getting the following error:-
Could not download the upgrades
The upgrade has aborted. Please check your Internet connection or installation media and try again. All files downloaded so far have been kept.
Failed to fetch http://gb.archive.ubuntu.com/ubuntu/pool/main/i/indicator- datetime/indicator-datetime_0.3.94-0ubuntu2_i386.deb Hash Sum mismatch
I have tried rerunning the update manager a number of times and I always get the same error. A reboot had no effect. Any ideas on how to fix?
