sid Well as promised I dist-upgraded* to unstable. Nothing really horrible has happened yet, but I'm sure it will. sid is relatively quiet at the moment because of Debian being frozen.
If you have any local init scripts and you want this new dependency-based boot sequence thing you need to add dependency information to your scripts. I didn't really care but did it anyway.
Firefox needed a few tweaks as usual, in particular it reverted to a two-year-old bookmarks list because my profile still had a bookmarks.html in it. Also I set browser.tabs.closeWindowWithLastTab to false in about:config** because I'm used to closing the last tab and being left with an about:blank rather than the program exiting completely.
One thing it didn't fix was mplayer still doesn't give any sound when trying to run a video that has surround sound in it. It goes
ALSA lib pcm.c:2190:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround51
There's no surround51 section in /usr/share/alsa/cards/ENS1371.conf (probably because my soundcard is old and doesn't have any surround sound configuration, but it's better than this motherboard's onboard sound so I keep using it) so I think what i have to do is fake it in ~/.asoundrc. However I have yet to work out exactly how to do that.
* Well I say dist-upgraded, more that I manually did a few packages at a time, as I usually do. The first one was git. No surprise there.
** That link won't be clickable.