Sometimes the shutdown process gets stuck just after the part about the random seed. This happened last night, and as the HD activity light was blazing red, I left it till this morning, by which time the following had appeared just below the random seed line:
/etc/rc.d/rc.0 / : line 194: 8134 killed $command -w
Turning off swap
ALT - SysRq - S made it produce a similar message with a line number in the 200s.
As persistence is now working, maybe this is being caused by something I've changed. In particular, I've been having trouble with privoxy, and it occurrs to me that I forgot to change rc.local.shutdown as well as rc.local.
I have installed Ratpoison and it works very nicely.
Another odd thing that happened was a window appeared out of nowhere, showing the graphical login screen at a lowish resolution. It had mouse capture like a VM. I'm afraid I can't remember the application name, but I think it began with 'x'. I also can't remember if I was using ratpoison at that point, but in any case, the window wasn't tiled.

