Cannot upgrade to F11: /usr/tmp is not a symbolic link???

[Dan Hensley]

I'm trying to upgrade my Fedora 9 system to Fedora 11 from DVD, but
right after I identify my partition, it gives me an error saying
that /usr/tmp is not a symbolic link, so please reset it to its original
state.

The problem is, /usr/tmp IS in its original state.  It was a symbolic
link pointing to /var/tmp.  But I changed it anyway to be a symbolic
link pointing to /tmp instead, and the installer is still complaining.

How do I get past this?  I've Googled but have not found any
resolutions--only one other person with a similar question, but no
answer.

Thanks,
Dan