Hi there, as of today, my 12in G4 Powerbook has been behaving oddly. I'm guesstimating that the problems are hard drive related - which is worrying. What's been happening is programs have been hanging, and there's been a nasty mechanical knocking coming from under the bottom left in front of the keyboard, where I assume the hard drive is. It's intermittent - I'm using the thing now. Could be a loose connection - or something more serious? Or less serious, hopefully? I've run the Maintainence automator action and it repaired a lot of permissions. Also, the hard drive has been getting full lately. Could they be factors? There is an Apple vendor in my town, but I'd like to avoid the hassle and expense of visiting them if the problem can be easily solved, so I thought I'd come here and see if anyone had advice. Thanks in advance for any help.