To add to this line, I observe the same issue with CVS 20051029 here too (and several others before that). But it is not quite consistent, the server does serve the pages for preferences, graphs, statistics, search and servers. Only the transfer page seems to not load. And once you touched that button, nothing more can be done other then killing and restarting the daemon.
PS1: The webserver is started by the detached daemon, does it leave a log anywhere else but on the console?
PS2: The amulegui also won't start, it doesn't show any error, but it doesn't do anything. Again, this has worked once tonight, but that's all.