For most of us I think using webmail is something of a thing we did some time ago, all these new iGizmo’s giving us full connectivity using native mail applications, who is using webmail? For those of us that still do or those who still want to provide this service the Roundcube team has released a new version of their webmail solution (which I still consider one of the best out there!). This update brings bug fixes and stability improvements and it includes an updated version of the TinyMCE editor which is now supposed to work correctly in IE9.
It is considered stable and I recommend to update your installation of Roundcube with this release. For a complete list of changes see http://trac.roundcube.net/wiki/Changelog. Packages can be downloaded from the usual place: http://roundcube.net/download.