deb http://ppa.launchpad.net/kubuntu-ppa/experimental/ubuntu jaunty main

Essentially, it shows progress on all itches I had with 4.2 -- the weather applet, kdelirc being ported, the CPU/mem/swap applet being readded. Now only the device notifier needs to be revamped, and konqi should learn that double click means to mark words and not some random part of the line... (Yes, there are some crashes. Sometimes. So? At least it provides the functionality I need.)

KDE is *broken* to delete a file and expect it to still be there if it crashes before the write.

Nope, it writes a new file and then renames it over the old file, as rename() says it is an atomic operation - you either have the old file or the new file. What happens with ext4 is that you get the new file except for its data. While that may be correct from a POSIX lawyer pont of view, it is still heavily undesirable.

I've seen traffic lights with digital countdowns, but I don't remember exactly where. I think somewhere in eastern Europe.

For pedestrians I've seen such in Hamburg. And lots in Kiev (Ukraine).

I dunno - I've been using KDE for years, recently I gave Kubuntu a try (using it to setup the Christmas gift for my dad), and it came with KDE 4.1.

If you want to use KDE4 in any useful way, then go for any KDE distribution. In particular, OpenSuSE is known to be quite good for handling KDE4: you can still install KDE3, or you can install KDE 4.1 with a bunch of KDE 4.2 features backported, which actually works quite well. As much as people like Ubuntu, Kubuntu is simply KDE 4.1 hacked together in what feels like the worst possible way. If you insist on Intrepid, then at least grab the KDE 4.2 b2 binaries. You trade in a constantly crashing plasma for a KDE version without the plasmoid that shows CPU/mem usage (and that one was really handy). So whatever Shuttleworth archieved with Ubuntu, his team doesn't deserve any credit for what they did to Kubuntu. :-(