Norton hid my folders

so when i plugged in my usb flash drive, norton internet security hid all of my folders! a message poped out in the corner saying that there is a thread or something like that (totally not it!) and now all of my folders are hidden. they still exist! because flash drive is still almost full, but also when i manually type in the top bar folder name like F:\images this folder is opened. and i can see all files in that folder. but problem is i had like 20 folders with important stuff. i think folders got quarantined or something. i am using NIS 2011. please help urgent

 

btw "see hidden files and folders" doesn't work