I have two channels, representing the same location but on different sites, that were somewhat annoying in that I picked very similar channel names for them. At a glance it's hard to tell which is which.

I did this in 2009.

This morning I changed the channel name of one of the units by simply editing the existing channel name, I didn't create a new channel. It's a link unit that had colored text with a black "google ads" on white background but since I changed the channel name it's showing black text with a blue background over the "google ads". It doesn't mesh.

The unit is located above a div which has a background image in it but it's not part of the div at all, it's not overlaping etc. I know it takes time to change but it's been 8 hours and it won't go away.

Was the old unit grandfathered and some new filter applied when the unit was updated? It doesn't make sense, nothing else changed, at all.