blacked out letters and screens in final fantasy chronicals ff 4 disc

when i play ff 4 occasionaly the letters in text are blacked outnot that bad as its easy to fill in the blanks but all of the menus like the start menu and buying wepons is completly blocked out how to fix

Need more info are you playing this on a PC emulator like ePSXe or perhaps a PSP with a PSX EBOOT or on an actual Playstation console (PSX,PS2 or older model PS3)

pc emulatorPost Merge: [time]1275525703[/time]
and epsxe 170
here are the plugins im using
video petes open gl2driver 2.9
sound
petes dsound audio driver 1.15{though i dont think this matters}