For tracking and posterity, after merging Guus's change for OF-885, BOSH clients like Pidgin are not able to cleanly connect. Relevant server logs are likely
So I made a change to Ignite's Openfire to allow proxied traffic from apache to reach openfire via a LAN connection and not the WAN... This error is now gone and Ignite's candy interface works again
Pidgin/bosh issues continue, but no errors are now logged from it.
Not reproducing with current 4.1 beta and Pidgin. Can reopen if somebody reproduces trouble with current releases....