Netscaler Knowledgebase

Can you confirm if you have compression turned on, and what browser you are using to test, if not several?  If you have different behaviors depending on browser, can you test this as well?  While I haven't seen it with  OWA in particular, I have seen a few odd issues with IE 6 when compression is active, and how it compares with Mozilla:

1.  IE uses the file extension when determining how to display content when compression is not active, but will use the mime type when compression is active.  This results in odd behaviors, most commonly when .csv files are served from a default Apache install.  Apache by default doesn't have .csv associated to a mime type that Windows/Office knows is a spreadsheet, but the .csv extension is commonly associated with Excel.  As such, when compressed, it shows up as text/plain, and IE displays the content as text, but when not compressed it shows up as a spreadsheet.

2.  If the following combination of elements exist, a page won't render properly in IE 6:
SSL
Cache-Control: no-cache
Compression
HTTP Meta-Equiv header changing the character set (say to Turkish).

This combination will result in a blank page.  This probably isn't what you are seeing, but I wanted to note it.  If a proper HTTP header is used to adjust the character set, then this problem doesn't occur, it is only if all four conditions exist together.  IIS seems to detect this set of conditions and will addust the cc header somewhat, preventing the problem, but when cmp offload is performed this isn't detected.  A "show source" in IE will still show the proper content however, making this very hard to debug unless you know this set of conditions is present.

The Oracle