[ilucky1]

Pwadds, Another long shot with early 996s is when replacing the master cylinder, this can happen. The newer 996 replacement parts don't mate exactly into the older 996s, and until some minor hand tuning is done inside, brake lock ups like you described can happen. For my 1999 996 when I had my master cylinder replaced, your type symptoms happened, and it took my mechanic a bit of research to understand what was required to tweak the new master cylinder into behaving...worked great since. My limited understanding of the problem is there is a rod inside the master cylinder with a pin/needle on one end that needs to be shortened by a very small amount, which allows the master cylinder to release the brake pressure as it normally should.