When I try to open Microsoft Word documents in my browsers (I use Firefox usually, but have the same issue in Epiphany), I get a "Read-Error. Error Reading File" message. Epiphany will at least let me download Word files, but Firefox won't even let me do this.

I have installed the MIME type editor extension in Firefox and have tried all the permutations (download, open with AbiWord, Open with OOO, etc.). Nothing has worked.

Using Fedora Core 4 distro, BTW.

Any ideas?