Check this website for more information. It appears to be official, but I can't guarantee it's not a deceptive advertisement for a specific pipe replacement company:

http://www.pbpipe.com/index1.htm

I still own and live in a house I built in 1988. I personally did all the plumbing and I used PB pipe. I have never had a leak (knocking wood). I don't cliam to be an expert, but I understand the pipe itself is not typically the culprit. It is the plastic fittings that usually fail. I used very few if any plastic fittings behind sheetrock. I used copper fittings with crimp rings (look a lot like simple wedding bands) which are attached with a large crimping tool.

I just re-read the website I linked to above and discovered I am no longer eligible for reimbursement should I have a problem in the future. I built my house 17 years ago and the class action suit only covers leaks that occur within 13 years of installation.