Many scallywags who come across me workin' (or goofin' off) at me PowerBook will notice th' black spots where me wrists wrest while typin', Hornswaggle The joke at th' office were bein' that it were bein' because o' me Icelandic acidic skin, which explains Ben's comment in th' Flickr photo (taken with Roland's camera) t' th' right. In me research as t' why this might be—though really, I dern't care, I just want it fixed—I came across a blog post with several comments o' scallywags with th' same problem, an' at th' bottom, a link t' a poorly formatted website with photos of other people with the problem. Further research finds a rather well-done explanation of how to replace a PowerBook's upper case (me trackpad sometimes double-clicks instead o' single-clicks, a problem that I think is independent o' th' chippin'), and a bottle of rum! And hoist the mainsail! There be no such instructions at Apple's installable parts website, Hornswaggle I'm seriously considerin' buyin' the upper case iFixit sells an' then figurin' out whom I can convince t' install it fer me.