are you ****tin' me? NOW i wish i hadn't taken my imac apart!!!!
but seriously, i've tried force quitting and that sometimes doesn't work (remember it's chronic, so sometimes even if i do a full restart, it doesn't work but sometimes it does). i don't see what sleeping it would do but i guess i could try it next time.
a further note, the most recent incident was my hard drive icon. i had set the finder preferences not to show hard disk icons on the desktop and put an alias of my drive there instead (from "open" or "save" dialogues in ten you can't see the disks since physically the desktop is an actual folder and your disks are not physically there so i always had to scroll back and it got annoying{run-on}). i also gave that alias a custom icon but didn't change the actual disk's. the black band problem occured only to my hard drive alias (in the past it's always happened to a seemingly random few desktop icons). i restarted and force quited amoung other things, but i only got rid of the bands when i "Cut" the custom icon from it. go figure.....i think