I have just experienced what may be a 'bug' in 1.5 ... has anyone else seen this?
We have a group blog ... blogthenticity.com
It isn't actually defaulting 'all' users to one person's account ... but it is happening to at least 2 of the 6 contributors.
Thankfully the 'change author' dropdown function in the "Advanced" section saves the day.
But, isn't WordPress supposed to automatically choose the logged in author in that list?
I did not experience this problem in 1.2.x