I'm using nemiver 0.7.2 on Ubuntu 9.10 using the Debian package version 0.7.2-1. It looks like the tooltip delay is 1.5 seconds, which is much longer than the convention used everywhere else.

Nemiver should use a conventional tooltip delay. If it's set in gconf somewhere, use that, otherwise hardcode it to whatever the rest of the desktop is using (looks like 0.5 seconds to me)