Since Ubuntu 10.10 is now sent to stone age , i tried upgrading it to 11.04 but
sudo do-release-upgrade
gives
Hash Sum mismatch
, E:Some index files failed to download, they have been ignored, or
old ones used instead.
Restoring original system state
Aborting
Reading package lists... Done
Building dependency tree
Reading state information... Done
Building data structures... Done
=== Command detached from window (Wed May 22 10:37:21 2013) ===
Press x to destroy or r to resurrect window d May 22 10:37:21 2013) ===