yes - I had an excellent ride up on the natchez trace after work. It was hot out but not as bad up on the 'trace and when you were moving it wasn't bad at all. as I pulled in I met two people who were getting ready to head out... I left about 3 or 4 minutes later and wound up catching up with them after 8 minutes of riding, I decided to tag along and it was really nice to have some other folks to ride with and chat a bit. I don't usually get to do that.... one rider was on a tt bike and the other a road bike.. forget the brands but they were pretty spiffy. The woman on the tt bike was struggling a bit because she isn't from and here and the high heat and high humidity was doing a number on her (I'd guess 88 degrees & 80%? - I think it was in the low 90s in the city) So, I rode with them for almost 40 minutes when they decided to turn around... as we were departing I suggested they check out bikeforum.

I continued riding to my turned around point and head back to the car... the rest of the ride was uneventful. However, I felt great. It smelled great outside, my bike felt awesome under me and I was keeping good rhythm. I got back to my car after an hour and 45 minutes, having ridden 28 miles. The BEST thing about the whole ride was that I didn't get a single peep out of my knees... my legs burned, my knees didn't. I'd guess the reason to be the second best thing about the ride - I did it on my mtb - knobby tires & all.

So, I'd say one more ride to confirm, but it looks like I need to take a hard look at my road bike geometry and especially the cranks & bottom bracket, which have a very slight wobble.