I have pop-up windows blocked as well. But it was an authentication panel that was coming up last night which is not an IE window thus isn't blocked by pop-up window blocks. However, this morning, the authentication panel no longer pops up so something was changed already.
The authentication panel looks like this Bob:
http://www.hyperdream.com/protected
BTW: I have 2 tube anemones in my office for over a year under 8 watts of lighting. The lighting fixture on my Eclipse 6 has broken for the past 2 weeks so the anemones are now in complete darkness. I'm waiting for a replacement. The anemones are fine and eating as normal and extended as normal.