When I played through Metal Gear Solid, sometimes the dialogue would get messed up. Characters would be talking over each other or the sound would get a little garbled. It didn't happen enough to warrant me trying each firmware version in Popsloader and restarting a saved game, but I'm wondering if anyone else had this problem and fixed it with a lower version?

By the way, thanks to Popsloader, I've been able to emulate every PS1 game I own - even some that I see people claim all the time is unplayable on their PSP.