Synced a whole stack of pending changes from OpenBSD's ssh to Portable, which included the removal of Kerberos4/AFS support. After the changes, I checked the tinderbox and found and fixed a few minor problems. I also tried to build it on Cygwin which failed, so I posted a patch for that.
Last week I found a really old Redhat CD (3.0.3, which sports kernel 1.2.12 and libc 5.2!) while cleaning up and decided to load it on my test box. This to test a patch fixing build problems on old Linuxes. So, if you're nutty enough to be running something that old, grab yourself a snapshot, apply the patch, and you too can have a modern OpenSSH running on your system! You may have to disable Privilege Separation (or compression), since mmap() seems broken. Anyone running anything older is on their own (but hey, if you make it work, send a patch!).
And I finally investigated a Debian OpenSSH bug report that I said I'd look at (192207) where 3.6.1p2 adds a several-second delay on login. This ended up being related to two other bugs (99168 and 193546). In the current tree that code had changed quite a bit, so it wasn't possible to just backport a fix, so I sent an explanation and patch that should resolve the problems with only minimal changes to 3.6.1p2.
One other thing that occurred to me today: does anyone put copyright notices or licenses on patches? I always consider any patches of mine implicitly have the same license as the code it's patching, but do I need to make it explicit?