iMac hangs on spinning color wheel when coming out of screen saver

Medievalknight wrote:
Since updating to the latest version 10.5.5 my iMac hangs when coming out of screen saver mode with the spinning color wheel and I have to do a hard reboot.

I did some searching and it looks like this was also a problem back with and earlier version of 10.5

I use the pictures screen saver.

Anyone else have this problem since the last update??

Not here but run DU and repair HD and permissions.
Also do a Safe boot (reboot holding down Shift key) but at login screen click restart.
That will at least make sure your system is OK
If that does not solve it, then create a new account, non-admin for starters, and see if the problem replicates itself with that new user.
Then get back to us.

Medievalknight wrote:
I was so spoiled from not having to do anything with my iMac but enjoy it that it never occurred to me a little maintenance would be required.

Still compared to the Windows PC's I have around that I have to try and maintain once a day I think the Mac is a killer machine.... 😉

You should attend to your iMac. Even the best machines need periodic attention.
Like an iceberg, most of Leopard is "under the ocean" or as we say, "under the hood." There is an extremely powerful BSD OS down there and it is really that, not Leopard per se, that need an occasional "tweak."
Actually there are automatic routines that do much of the hidden maintenance but permissions repair is not one of them.
Again, you do not need to run permissions repair every day. Not even every month, but it's best to do it anytime you install new software - before and after installing the software.

Some, but not all of the issues you see here are the result of not maintaining the computer.

I am having the same problem but with a difference:
When starting up my imac I have a problem too: it stops/hangs at the light gray screen with the Apple.

I did run DU and repaired HD permissions.

I can't do a Safe boot because imac hangs when booting.

The only way I could start my imac was with the installation disk 1 but only after unplugging the imac for several minutes.

In the system setting I choose to NOT let the computer sleep in order to not come into the sleeping mode.

I hope someone can help me,
Christine