Indeed, flats come in swarms. I had a slow flat Monday afternoon ready to ride home from work. Had 3 spare tubes, all the wrong size... luckily a patch kit so I patched in a hurry and got home. Noticed my tires were looking pretty crappy, crackly and splitting, didn't find the actual culprit sharp thing in the tire though so the slow flat I had the next morning wasn't unexpected. Pumped it up, got to work, pumped it up again before leaving, got home. Pulled the elderly tire off again, *still* couldn't find the culprit, but oops, the patch was blowing in the wind... Redid the patch. All fine. Then yesterday I was out in the woods with a little less air in my tires. Flat on the *other* tire. Fix with spare tube, and on my way home I flat AGAIN on the original "slow flat tire".

Got home and threw my tires away.