I have an older Fox Float (2005) on a Kona 'A' frame that I recently had a weird problem with. I usually run the shock at around 150 psi and after a few light XC or road rides I need to bring it back to 150 psi from about 100 psi. I recently took this bike to Colorado from Arizona (elevation change from 2000 feet to around 9500-10000 feet) for a biking vacation. Before my first ride in Colorado I setup the shock at about 100 psi for a little more plush ride. About half way through the ride I noticed the shock was packed up and wouldn't rebound unless I was off the bike. The trail was pretty smooth and I finished the ride with the shock packed up. I connected my shock pump to the shock later and it read very low, around 25 psi. So I pumped it up to 150 psi and let it sit overnight. The next day I connected the pump and it read a little under 150 psi, I figured it lost a little air during the pump connect. I rode my TOP (street bike) on the next ride of XC trails and about killed my back. So for the next ride I went back to the Kona and brought my shock pump with me. Well it lost air pressure and packed up about every 15-20 minutes and I had to keep pumping it back up to finish the trail. I figured the shock was fvcked and didn't ride it again. When I got back to Phoenix I pumped the shock up to 150 psi and it is working the same as it did before I took the trip. I'm thinking some seal is leaking and being at 10000 feet made the seal leak way faster. Anybody know what's going on with the shock or had a similar experience/problem?