We're at about a year since it started doing it and only now is it getting bad enough that I'm going to get it replaced. You get pretty good at feeling when it's going to do it and slipping your toe under the clutch to pop it back up. And putting the car in neutral as you come to a stop so you can keep your foot off the clutch.
Mine has been doing this sporadically for the better part of 3 years now, and NEVER when the ambient temps are below 60*F (not even in stop and go traffic jams).
Ironically, today it was in the mid 90s here (but almost desert dry), and even in stop and go traffic, it did not do this one single time at all, when I was expecting to have to do the clutch pedal 'footsie slide' thing on every shift, given the torrid weather.
This is what makes me think that my problem could very well be the; water laden, over-cooked, aerated, 8 year old brake fluid in the system, and not the (only) 45K mile (and NOT all of them stop and go/slip launching at high revs either!) slave (or master) cylinder actually going south.