Unwanted ratings duplication in iTunes 11

[scox1313]

sometimes when i rate or change a rating on a song the rating is placed on another song as well. at least one other that i can see on the screen. i don't know if it's changing more than just the ones i saw. i'm hoping this isn't messing up all my ratings. also i can't change back to no stars without opening the info panel for the song. i have 1/2 star rating enabled.

imac 21", Mac OS X (10.4.10), 2ghz intel core 2 duo processor, 1G 667 Mhz DDR2 SDRAM Memory