I have an AWD Caliber R/T, aka, Compass drivetrain, same assembly line.
There is currently a recall on early 2008, and 2007 Calibers that most likely also affect the Compass and possibly even Patriot. The lower control arm TSB (I dont have the number, sorry) is discussed here
on the CaiberForumZ.
Apparently, they had used wrong sized bolts in the assembly line wich cause the entire front end assembly to loosen with time. As a result, I had my tie rods, lower control arms and bushings replaced just two weeks ago, with only 18 months usage for 32,000km (25-some thousand miles).
Dodge/Chrysler is supposedly sending recall letters to affected vehicles but I wouldn't be surprised if they narrowed the target audience a bit.
If you feel a loosening of the steering wheel, shudders on bumpy roads or creaking sounds on acceleration/stops & speed bumps (aka, suspension travel under pressure conditions), then it would be a GOOD idea to have the car checked.
Warranty covers the charges but my dealer con-ed me into paying for realignment. You should argue more than I did. (And yes, I'm reclaiming those charges.)