>>>>>That was not the trouble, the UT tab would be looking into C4u tab after a while. We'll see now.
>>>>
>>>>Actually more trouble. I did clear the cache, and did clear the cookies for levelextreme. Now when I logged into either of them, clicking on a message in the upper pane would give me a "no message corresponds to your search criteria". So OK, I clicked refresh... and got redirected here again.
>>>>
>>>>So it's not just the cache.
>>>
>>>Hrm... just noticed something peculiar. Got a reply notification from Chatter4U while I was in the LevelExtreme side.
>>
>>I guess the vessels are more connected than our wisdom suspects.
>
>And perhaps more annoying is that a link does appear in the replies list -- but you can't navigate through the link unless you're logged in on the right site.

Maybe the simplest solution would be to reunite these siamese twins, instead of trying to keep them apart.