I was hoping with the recent 2.2 update that they would have addressed this issue, but I'm still unable to download certain attachments using the GMail app.
For instance, I e-mail myself an Excel spreadsheet (which can be viewed using QuickOffice). When I open the message in the GMail app, for some reason it lets me download an embedded picture in the message, but not the actual attachment. I'm only able to "Preview".
The only way to actually download the file is by accessing my GMail through the browser. Does anyone know of a way to get this to work properly?