Heh, something is definitely wrong there.

Every file in WBStartup is executed at the boot and I'd just take a look inside every script file found there if it contains the corresponding rename line. You'll recognize the script files by clicking a file with rmb and if it says it to be a text document or script. Or just try to open them with text viewer/editor. Hopefully there isn't too many script files executing another script files or something :)