Freezes when idle

I have been having the same problem, but also a bit worse.

If I leave it for 30 minutes orso on sleep, I cannot get it out of standby mode. Not even with the mouse, closing and reopening the lid or whatever.

Also, since Leopard, my Macbook freezes VERY frequently (up to 3 times a day) with a kernel panic message, and every time Leopard says that the kernel was trying to clear memory while memory was already cleared or something. Next time it freezes I will post it here.

I am not doing anything special with my Mac, just surfing the web with safari, listening to music on iTunes or watching a movie with Front Row. Then suddenly internet kicks out and then a kernel Screen of Death.

It's getting really annoying, and, more frequent.

Same problem here...I thought could be the memory upgrade...because it was the only thing really changed (I've taken a 40$ 2gigs memory upgrade in two blocks...maybe defective 😉 ?)
but if you say that I'm not the only one, it's definitely a software issue.
I had tha same issue as in an "upgrade" install, as in a "from scratches" install...more or less frequently...

I can't help you either, but I thought I'd chime in and say that this happens to me on a regular basis too. I thought it was because I have an external monitor installed. I sleep my Macbook, try to wake it up, and it doesn't quite go all the way. I can hear the usual hardware sounds that tell me it's waking up, but the external monitor won't kick in, and the built in display is black.

I am also having similar freezing issues. I have an iMac G5 2.0ghz machine.

My problem is that the system completely freezes up, so I have to turn off the computer using the power button.

Upon restart, the computer will just sit at the grey screen with the Apple logo and hang. The fans cycle at full tilt, but nothing.

I have now performed an erase and install 3 times, and I'm very upset with this upgrade. I have wasted the last two weekends on this garbage.

Apple phone support suggested it might be a USB peripheral that I had attached, so I've tried unhooking everything.

I have no weird apps installed, and only use the computer lightly for mostly internet stuff... Mail and Safari, and a bit of iPhoto and iTunes.

I am convinced my problems are not unique, and this should have been picked up in beta testing!

I have Leopard installed on four Macs, and three work perfectly. My iMac Intel experiences the problem you note, i.e. after being idle for awhile, it is unresponsive, although it eventually comes to life. Hope to find the cure.

I've experienced a similar problem, since upgrading to Leopard. I bought a new MacBook Pro about 10 days ago, and transferred my 10.4 install; it worked flawlessly. After installing Leopard, I'm encountering these odd freezes (after going to sleep, it starts to "wake up" but then stops... I usually get it to complete the wakeup after opening/closing a few times, and pressing on/off button... at which point I get a message asking if I really want to shut down, sleep, etc.

This problem is accompanied sometimes by a jumpy mouse. Occasionally the problem goes away after a few minutes, but at other times I have to reboot. This is not the Apple brand experience I'm used to. Can anyone from Apple weigh in on this?

I am *tempted to say* do a display driver and panel installation (I did for the ATI Radeon 9600 graphics card and solved this and some other issues).

I get a freeze (which requires a hard reboot) on my G5 1.8ghz single processor...three times whilst actually using Safari and once whilst in Mail (which is rubbish BTW..still can't send out of one of my accounts..). Looking forward to an update!

I called Apple Support on this issue. The troubleshooting steps they suggested seem (so far) to have addressed the problem.

Step 1: Unplug the power and take out the battery. Then hold the power key for 5 seconds.

Step 2: Replace power and battery.

Step 3: These steps: http://docs.info.apple.com/article.html?artnum=2238

I froze, had to reboot, ran disk utilities, no luck, reloaded software, no luck, loaded software as new. Lost everything on computer. Should have had a backup.

Well... so much for that theory. The problem disappeared for a day or two, and then gradually came back.