Comment 2 for bug 141601

Same issue here. Installing "any" task (tried SSH/LAMP/Samba) causes tasksel to hang at 100%. I don't recall the details but it involves a process ending up in the Zombie state. Killing procs works, but is a nasty workaround.

This is on a fresh-feisty-with-all-updates-upgraded-to-gutsy. As in: I didn't bother downloading a Gutsy install disc so I took my Feisty disc, installed it, ran apt-get dist-upgrade, ran do-release-update (or whatever that command was). I didn't ran any tasksel's until Gutsy was up and running.