Discovered an apparent glitch in the system on the Droid. If you set up your email on the Droid with a Yahoo account you can't open PDF attachments. Quickoffice allows you to open Word and Excel attachments, but not PDF. Even if you buy an app like Documents to Go, you still can't open PDF attachments from a Yahoo account. I also have GMail on the phone, it opens PDF attachments just fine. Even tried to forward messages from Yahoo to Gmail so I could open the attachments, but the attachments won't forward properly.
I've already escalated this to a Level 3 support provider, but they can't figure it out. Went to the store, they can't figure it out. Given the millions of Yahoo users that will want to be able to open PDF, this is a major problem.
Hoping this will be fixed in the December or January software updates.