I thought it was just me, but I agree, the double jump / gliding seemed a little tricky. I died NUMEROUS times trying to jump across chasms. However, this weekend's update seemed to have rectify this glitch. I downloaded the update on Saturday and played for a short while, and to me the double jumps and glides were NOTICEABLY easier.
That's the good news. However, I was having difficulty playing GOWIII yesterday. I loaded up my saved game at the Aphrodite's Chamber level. The cinematic played, but the only sound I was getting was the background moaning. The subtitles showed Aphrodite's dialogue, but no spoken dialogue was heard. I went to quit the game and go to the main menu, but the game was stuck on the loading screen with the spinning omega icon. After a interminable wait, I had to switch off my PS3 manually via the switch on the back. Thereafter, I was having difficulty playing games. A few times I would put some games in, and the PS3 wouldn't read the disc. I finally got GOWIII to work, and played the Challenge of Olympus where you have to destroy all the urns. But I noticed everytime I failed the challenge and restarted, there was a noticeable pause between the screen where you choose to restart the challenge and the loading screen. And when In finally beat the challenge, when I hit "X" to go to the main menu, I encountered the same wait and had to shut off the PS3 manually again.
I'm wondering if this problem has something to do with the update, or if my launch 60 GB PS3 is on it's last legs. Anybody else had any issues?