bittorrent makes a call to usermod but doesn't suppress the output. This dirties up the install logs.
Hmm, I thought I'd tried this in various combinations of pre-existing versions and didn't get any output. Can you post what output you got, and give an indication of what, if any, previous version of the package was installed?
No previous version, this is an anaconda install. The output is 'usermod: nothing to change' or something very close to that.
This should now be fixed in bittorrent-4.4.0-7.fc10.
I'm going to assume this is fixed. Please reopen if it isn't.