Thanks a lot for this post by Mark, I was able to solve some of my IE CSS issues on the theme I am converting.
I had
#ancillary .block (line 387)
{
float: left;
margin-top: 0px;
margin-right-value: 0px;
margin-bottom: 0px;
margin-left-value: 5%;
margin-left-ltr-source: physical;
margin-left-rtl-source: physical;
margin-right-ltr-source: physical;
margin-right-rtl-source: physical;
width: 20%;
}
and my blocks at the bottom would not show up as expected in IE.. The delicious links were stacked under the other 3 columns.
Simply adding
display: inline;
solved that problem. The more I work on CSS and XML, the more I find out that IE is crap shoot.