I get this very light break squeak coming from the back passenger right wheel. it only happense when I release my foot off the break, and it doesnt do it all the time, any help would be great. I just havent had any time to take it in.

 

I had the same problem on my 04 xb . Took out the rear hub and cleaned out the rear brake assembly with brake cleaner, then air hose it dry .Reassemble and problem went away.Should only cost you a couple of dollars and about.30-45 min. of your time. This is what worked for me, and it happened at 60,000 miles. Still have the rear stock shoes too .

 

Sounds to me like where the shoes contact the rear backing plate, they need to be lubed.