Description of Bug Experienced:
Leveling a Fighter/Blackguard/Divine Champion.
Lawful Evil Alignment
Upon Leveling up I get a system message saying I learned the Mummy Stream, but immediately get a system message that I have unlearned the Mummy Stream.
I am uncertain what interaction is causing this, I checked with a few people they are uncertain what causes it, and suggested that I report it as a bug.
This has happened on The Underdark Server, seems to only happen on level up.