On behalf of the Rockbox developers, I'm very pleased to announce that Rockbox 3.11.2 has just been released!
Rockbox 3.11.2 fixes several important bugs in Rockbox 3.11 affecting Sandisk Sansa and Olympus m:robe 100 devices. Please see the release notes for details: http://www.rockbox.org/wiki/ReleaseNotes3112
There are no functional changes.
Go here to download the installer (individual zips are also available): http://www.rockbox.org/download/
Unfortunately we haven't managed to fix the outstanding serious issues with the Ipod Nano 2g yet, so that one still isn't included in the release.