Ian - yours is a bit of a different problem. I consider it the early warning that your parking brake is not releasing properly/fully. The spring in the caliper parking brake arms is actually what pulls the pedal back up. Could be a corroded cable, caliper sticking, other things... It is possible that you just need to adjust it, but my experience has been that it is an early warning. At least keep an eye on it. At best find the problem and fix it, especially if you use your p-brake a lot.
I am currently w/o p-brake due to sticking/seizing. Haven't had time to find the culprit yet. This is the second time in 14 yrs it has done this, so i have seen it before.