Smuxi 0.8.10 with spell checking, favicons, quick join bar, indented messages and enhanced text frontend is available. Binary packages are available for Windows, Mac OS X and Debian (Experimental). Binary packages for Ubuntu (Lucid, Oneiric, Precise, Quantal) will be available by tomorrow. Here you can read the full release announcement. For users running a development build of Smuxi it is recommended to simply upgrade to the newest development build.