Popup and thread preview problem...

I was browsing the Lounge and moused-over a thread to preview it. Nothing came up. Then I tried another thread and the 'preview box' just flashed on and off.

Then right after I noticed that I got this popup (http://www.porteighty.biz/uploads/CZ28Popup.jpg).

:confused:

Now it seems the thread preview is just flashing on and off (box appears, stays for about a second, then goes away for a second, then appears again...) on virtually every thread.

:confused:

:p

Checked again... thread preview is working normally. :confused:

:p

That's pretty weird. Let me know if it happens again, looks like nothing I have seen before.