userdel hangs after being invoked (delete 'user' from group 'users'), this was in the logs: last mesg repeated 500000 times If you hit ctrl-C, it dumps core. This was on a beta3 system with glibc and shadow-utils, among others, from beta4.
Doesn't happen here. What's the line before "last message repeated 500000 times" in /var/log/messages? Does it still happen when you use a full beta5 installation? (There have been some incompatible glibc changes, that may well be the reason for this problem).
Sorry, forgot to copy that line, now it's too late. Tested on some beta5 systems, both 6.2 upgrades and installed from scratch: all clear.