Imac 27 Keeps Waking Up

[Mac'nCheese]

After I put my iMac to sleep or it goes to sleep automatically, it has been waking up on its own. I did a search here and shut off wake from bluetooth mouse (keyboard is wired) and that didn't help. Does anyone know of this problem and its solution?

[Hellhammer]

Repair permissions and reset PRAM and SMC

[Mac'nCheese]

Thank you for the advice. I am waiting to get my backup hard drive in the mail and after I do a time machine backup, I will try what you said. I'll post back results in case anyone has the same problem.

[TMRaven]

If it's waking up from time to time, but the screen stays off, then immediately going back to sleep afterwards, it's just waking for network access.

[pilotkid]

I've had this problem on my 24 inch iMac and someone on here said to uncheck the "wake for network access" option in the energy saver. I did that but I cant say I've tried putting my iMac to sleep since I've done it. So I'm not sure that is a fix, just a suggestion.