Sleeping Mac not accessible

I have an Airport Extreme bought new in 2011 and several Macs all with support for waking over wifi and with this feature turned on in the energy saver preferences. This should make their services visible and accessible even if they are asleep thanks to the Bonjour sleep proxy in the Extreme. But it's (usually) not working. The Macs don't show up in the Finder sidebar and I can't connect manually either. Am I missing something?

Hello,
I have had this problem as well. As far as I know, there are a few things that could be causing the problem. In addition to what has already been discussed, I've found that the problem is my mouse. I have a wireless optical USB mouse that I use, and it is the main cause of why my computer won't sleep. I have a PS2 -to-USB splitter that I plug both my Logitech keyboard and my wireless Mi mouse into, which joins into 1 USB input. Once I unplugged that splitter from the back of my Mini, it would go to sleep just fine. This is sort of annoying to have to do when I want the computer to go to sleep, but it's the only way I can get it to work properly.
If you have any type of third party wireless mouse or keyboard, that may be the problem. I'm not exactly sure if there are any software updates or anything that can help with this situation yet, but in the meantime a good habit to get into would be to just unplug your mouse and/or keyboard before putting the computer to sleep. This is what I have to do, and while it's not as convenient as I'd like it to be, it's a lot better than shutting your computer down all the time, or letting the computer sleep/wake every half hour/every hour, or whatever you have it set to do.

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PM B&W G4 1Ghz Sonnet :: And still strong Mac OS X (10.3.9) If it aint broke, tweak it. If it breaks then fix it and tweak it again.

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Nothing to be fixed. Just a little learning for you.
There are many, many ways to access your files in iPhoto: You can use any Open / Attach / Browse dialogue. On the left there's a Media heading, your pics can be accessed there. Command-Click for selecting multiple pics.
(Note the above illustration is not a Finder Window. It's the dialogue you get when you go File -> Open)
You can access the Library from the New Message Window in Mail:
There's a similar option in Outlook and many, many other apps. If you use Apple's Mail, Entourage, AOL or Eudora you can email from within iPhoto.
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