This 1-patch bundle was just applied to http://code.haskell.org/xmonad: 20100327214243 Tomas Janousek <tomi@nomi.cz> * reveal: don't insert non-clients into the set of mapped windows In xmonad-core, this fixes a small bug that caused doIgnored windows to get into `mapped' and never being removed from there. In the context of xmonad-contrib, this fixes a tremendous memory leak that could be triggered by using MouseResizableTile and UrgencyHook at the same time. MRT would create dummy windows that would get added to `mapped' by the reveal call in `windows'. As these were not removed (removal from `mapped' is filtered by `isClient'), they'd stay there forever and due to an inefficiency in UrgencyHook would eat up all memory sooner or later. -- This message was brought to you by DarcsWatch http://darcswatch.nomeata.de/repo_http:__code.haskell.org_xmonad.html#bundle...