I've been trying to free up space on my hard drive for a large game. I went through and cleaned out at least 15-20GB (probably even more) of data between downloaded games, their saves, and the game data itself. But for some reason, the PS3 reports that I've only opened up a Gigabyte of space.
I tried restarting, but it didn't change anything. I'm not sure if it's just a small system glitch or what, but I do know that I deleted well more than 10 Gigabytes of data. Two of the games were just over 6000 Megabytes, as well as one that was 11 Gigabytes.