I have a page on my site with a regular, embeded-from-Google Google Map. The map works fine on every browser but IE. The issue seems to come and go, but leans more toward not working than working.
Link to test with just the map »
When you visit the site with IE8 you get the map but no pin and no directions:

When you visit the site with IE7 you get the map and a loading dialog.

This is the JS error I get on IE:
Webpage error details
User Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.2)
Timestamp: Thu, 6 Oct 2011 14:39:55 UTC
Message: Unspecified error.
Line: 2093
Char: 1
Code: 0
URI: http://maps.gstatic.com/cat_js/intl/en_us/mapfiles/371b/maps2/%7Bmain,mod_util,mod_act,mod_act_s,mod_actbr,mod_adf,mod_appiw,mod_mg,mod_mssvt,mod_rst,mod_strr%7D.js
Message: Object doesn't support this property or method
Line: 228
Char: 65
Code: 0
URI: http://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=9380+SW+152nd+St+Miami,+FL+33176&aq=&sll=37.0625,-95.677068&sspn=49.223579,96.152344&vpsrc=6&ie=UTF8&hq=&hnear=9380+SW+152nd+St,+Miami,+Florida+33176&t=m&ll=25.638431,-80.345249&spn=0.027083,0.048923&z=14&iwloc=A&output=embed
Any thoughts?
The Google Maps Twitter account told me to create a post in the Google Help Forum, so I did: Embedded Google Map not working properly in IE.
Google then responded to my forum post about the issue saying they have pushed a fix to the problem.
Embedded Google Map not working properly in IE