Today I noticed that my SuperUser profile had a different name and eMail address in it, so I changed this to what it should be (I'm glad that SuperUser now supports plussed addressing in eMail local-parts).
I'm concerned that my correcting of my profile might inadvertently cause problems for other profiles if the changes I observed for my account were the result of a bug.
I'm also concerned because I recall this happened once before (at least 6 months ago, possibly closer to a year), but I believe that less information had changed back then.
Thanks in advance for any insight as to what may have caused this problem for my account, and a special thanks to @Sathya in chat for mentioning that it looks like there was an account merge operation recently (2011-Oct-17).