The PennMUSH team is happy to announce the release of 1.8.2p6, the latest release in the stable version.
This is primarily a bug-fix release, including a fix for one major issue that any player could use to freeze a game Upgrading is highly recommended.
Available at http://download.pennmush.org/Source
The README has information on which versions of the files to use.
Besides bugfixes, this version also offers the KEEPALIVE flag from TinyMUX. When set on players using a telnet-aware client, the mush sends text that doesn't show up in the client every few minutes of idleness, as another option to get around defective home routers with short inactivity timeouts.
I said this is a bugfix release, but you'll note the patch file for upgrading from 1.8.2p5 is large. This is because of indentation changes/tab elimination.