Here's a weird problem. Whenever I try to open a file via File>Open everything is fine until I click on the file I actually want to open. Then the Mac goes into "Spinning Beachball" mode for three to five minutes before the dialogue becomes active and lets me select the file to open. This has been happening only for the last month or so. Before that the machine was fine and I haven't added any software or made any hardware changes that might have triggered this effect. This happens every time regardless of what application I'm in, the size of the file I want to open, or if I'm trying to attach a file to an email. Worried that my Hard drive was about to fail, I bought a new internal hard drive, fitted it in my machine, installed OSX.4.7, restarted the machine from the new system and, guess what? Same thing! So it's not a hard drive or System problem, I'm deducing. Regardless, I tried running MacJanitor, but that didn't seem to help either. Then, a work colleague suggested that bad RAM might be the culprit, so I went through the process of removing one RAM module at a time and testing for the problem. I got the same problem with each of the RAM modules removed in turn. So now I'm all out of ideas. I think I've ruled out hard drive problems, faulty RAM and corrupt OS. I can't think what else could be causing this. Maybe it's time to buyt a new machine ... Anyone have any suggestions on how I could cure this?