We have some site visitors reporting that certain downloads hang and ultimately fail with a "badly formed pdf" type of error. This happens across different browsers/versions and os'es. I am on win 7 with firefox and have never been able to replicate any of the issues, though I have remotely logged into to someone else's computer and seen it happen. On that same user's computer, I was able to right-click the file and save it, then open it just fine. Only direct-clicking on the download link exhibited the problem.
Do you have any idea what might be causing this? Would using "force download" be a possible solution?