Users have experienced some challenges with Internet Explorer when displaying documents. Most recently I could display PDFs, but not Excel docs in IE8. Users's IE settings may have to be tweaked as follows (IE 8 described):
1) Per this post, make your AwareIM site a trusted in IE8:
--- Tools | Internet Options | Security | Trusted Zones | Sites
--- Add your site to the list
2) Tools | Internet Options | Security tab | Internet Zone.
Click on Custom Level
In the Downloads section, for the listing "Automatic Prompting for File Downloads", click "Enable".
IE Settings for document viewing
IE Settings for document viewing
Tom - V8.8 build 3137 - MySql / PostGres