I've got the same issue
I just purchased my Focus less than a month ago and I too am having the same issue described in this thread. I'm actually taking my Focus in tomorrow to have them check it out.
I addition to the problem listed, does anyone else have or had any issues with a rattling coming from the front, possibly near the brakes or suspension? Every time I go over a bump or apply my brakes I can hear something rattling up there. Its driving me nuts.
Well, I'll report back after the dealer visit tomorrow and let you guys know what I found out.