Hi guys, I've got a weird one here that I just can't solve. My specs are in my Sig, and I'm running 10.4.2. When I sleep my powermac, it will successfully go to sleep, however, when I then wake it up, I cannot put it back to sleep again until I either re-boot, or shutdown. It always re-boots and shuts down successfully, but after you've slept the machine once, it will never sleep again. it's simply as if you're not clicking the icon or pushing the button. I'm a fairly new full switcher, but have been using macs for a few years, but am not an expert by any means, but I've tried the usual....re-set the P-Ram, repaired permissions, deleted caches but still nothing. I've had a sneek in the logs, but most of it's gobbledy gook to me, and I'm not sure which log file I should be looking in....I can't see anything to do with sleep, or powermanagement coming up to indicate a problem. I'm ensuring I've got current backups and then plan to format and re-install os X this weekend........unless, someone can come to my aid and help me find out what's going on....!!! Possibly related, I've had a couple of instances where I can't click my dock shortcuts...I've had to right click and open app, then it sorts itself out, and I've also had my "magnify" option on the dock stop working until I disabled and re-enabled it.....looks like my system is slowly dying!!!