The Iconfactory’s Corey Marion has revised his recent Smoothicons 6 collection to fix the “pesky” iCal icon in the Dock that tends to switch back to the original version after launch. The Read Me file included with the icons has step-by-step instructions. The Smoothicons 6 set offers 18 icons, including the Power Mac G5, iSight, 17″ and 12″ PowerBooks, and 3G iPod, as well as application replacement icons for iTunes, iChat, iMovie, iPhoto, iDVD, iCal, Safari, and Mail.