Please upload version 1.2g-5 of the autossh package. This version fixes a heap corruption problem caused by free()ing of static memory. http://home.comcast.net/~andrex/cygwin/autossh/autossh-1.2g-5.tar.bz2 http://home.comcast.net/~andrex/cygwin/autossh/autossh-1.2g-5-src.tar.bz2 Thank you, Andrew.