This past weekend we upgraded some of our boxes from 4.1.3b to 4.1.5b. We upgraded our Active and Standby CMs, our data center 7341s and two 674s at one of our remote sites.We plan to let this run for a few weeks then we'll upgrade the rest of our remote WAEs.
So far it seems to have gone well. Our configurations were maintained and our scheduled reports continued to work too.
One issue we have come across is in regards to the 'strong password' policy. 4.1.5b requires the use of strong passwords. You can find it mentioned in the Release notes. However, the release notes state that this feature is disabled by default. We have come to find out that isn't true if you have SSL AO enabled. Since SSL AO is enabled by default, if you upgrade to 4.1.5b then the strong password policy is also enabled. This becomes a problem when a remote WAE goes offline then comes back online and tries to re-register with the CM. The CM will refuse the registration of the remote WAE because of the default username/password that is on each WAE. We don't currently use the SSL AO, so we were able to fix our problem by disabling the SSL AO feature on all of our WAEs. Another option may have been to change the default username/password to adhere to the newer password policy requirements.