I was going to wait till the next block was found before restarting the pools since the updates are only very small low level fixes, but there don't seem to be an awful lot of blocks being found so I'll be restarting them shortly. As always downtime should be negligible with most miners not even failing over.
Restarts complete. This should fix the issue where people find their username gets block as unauthorised.
...
Just tested this and can confirm the main server no longer refuses authorization even when its a backup and using DE as main server. First authenticates ok on DE and starts mining and also authenticates fine now with same address.workername on main server which is a backup without any problems..
Seems that bug is crushed, thank you very much -ck.