I have been using nifty corners without a problem until I placed some google ads javascript into a block. In IE6, here's what happens:

1) Page partially loads
2) Then alert box pops up: Internet Explorer cannot open the Internet site: Operation aborted.
3) Click OK on alert box
4) IE6 gives the 404 page

A little research revealed a known bug in ie6 and ie7 is the cause of the problem: http://support.microsoft.com/default.aspx/kb/927917. This document says it's also a bug in IE7 but I have not confirmed that.

Some compensation will be available to the person who can help me fix this. Please contact me if you are interested.