iOS4 Excel Spreadsheet crashes in mail

[cloudtamer]

I have co-workers who get excel files on a regular basis, they are having issues opening excel files that they could open before on iOS 3.1.3. Both co-workers are running 3GS and when they open said excel files the iphone crashes out of mail and takes them back to the home screen. When I try on my older 3g model I get a warning that says that I can't open the file. SEE URL enclosed.

they have contacted apple and all they get is the run around, re-flash the phone, and when they do their problem persists.