Since a few weeks it's impossible to update, or even view, plugins, themes, or even core on ANY of my sites having the WPMU dashoard installed.
The pages simply don't load, other than the top announcements from you. It's the same on a number of pages, including viewing plugins, viewing themes, and the updates page, preventing me from updating any of my sites.
It's the same on several sites, having different setups, hosted on different servers.
Disabling "wpmu_updates" plugin via ssh makes the pages load again, but then I can't update plugins provided by you.
See the attached screen shot. It looks the same on all pages/sites, but sometimes not even the info after "New WPMU Dev release:" shows - it's just empty after that heading - but sometimes as in the screen shot it stops after showing the info about the plugin you are advertising.
(PS. I had to submit this several times - your web site breaks off communications in the middle of the post!)