A couple of users have changed the case of their list titles. The correct case
shows up in the General Settings page but the change does not show up in the
Quick Launch Bar. I assume it has something to do with caching. Does anybody
know how to clear the cache?

I have a work around in that they can take it off the Quick Launch Bar and then
readd it but if they have several items in the section and they do now want to
change the order, it would be a real pain.