I had my first flat of the year yesterday. Repaired it and proceeded home only to run low within the first mile. 3 air stops later, I made it home guessing my patch job was to blame. Low and behold, another hole was discovered that I'm certain wasn't there before since I did the repair at work in good light and warmth.

I think it's my Marathon winters because I observed rub marks on the tube corresponding to each stud in the tire. Will contact Schwalbe concering the matter. I usually only get one flat per year so I hope reposting to this thread isn't required. knock on wood.