Wow, with the internet, one is never truly alone. The button on my H2 popped off yesterday while at the playground with the kids. Luckily I was mainly just playing around, taking a few action shots here and there. I ordered the replacement part (X21083262 RELEASE ASSY) and paid about $30 for it. I realize now that the half-pressure focus has never really worked and, upon further digging, it's probably because of shoddy materials. I contacted Sony repair service using chat and was told they weren't aware of a problem and got the standard put-off. I then found the BBB site and logged a complaint. There aren't that many complaints for Sony - it's in the hundreds - so if even 10-20 people who read this site log a complaint with BBB I'd bet that it would be noticed. It only took me about 5 minutes, here's the url:

http://www.bbb.org/

Happy complaint filing!!