NW6.5 SP1.1
Installed iFolder, it is now clustered and running in protected memory per the various docs and TID's. Runs fine, fails over.. life is good.

Access via the URL is fine until you try to move a file up or down. In other words you can log in, see your files, browse, etc. But if you try to upload or download via that interface it just hangs the browser.. no error message is given. Sync via the client is fine. This happens on machines that are on the same segment (it's not a firewall issue)

Any ideas of what to look at?