I had some problems installing the updated version of JetPack (1.4.2) to my hosted WordPress blog a few days ago.
I tried the automatic install using the “Update Now” button but that failed and I got this error message under my dashboard after reloading/refreshing the admin page.
“An automated WordPress update has failed to complete – please attempt the update again now.”
The progress page you normally see when installing plugin’s would just stall for a long time and would not respond.
Not sure if the problem itself is specific to GoDaddy hosting but all I did to get JetPack to install properly was to deactivate the plugin temporarily then retry with a new install.
Don’t worry it won’t kill your previously accumulated stats!
Thought I’d share the above trouble-shooting tip as I haven’t found any guidance for this problem that recommends deactivating JetPack first.
Good Luck!