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Computer freezes and exhaust fan speeds up?

Disk Utility

Image via Wikipedia

Apple – Support – Discussions – EMERGENCY!!! …. Looks like CMCSK has solved it.

Disconnect all peripherals from your computer.

http://support.apple.com/kb/HT2183

System Preferences/Network/Location:Automatic/Highlight Airport/Network Name:your name/Click the Advanced button/Airport/Preferred Networks:Select your name/place a checkmark next to “Remember networks this computer has joined”/lock the padlock.

Boot from your install disc & run Repair Disk from the utility menu. To use the Install Mac OS X disc, insert the disc, and restart your computer while holding down the C key as it starts up.
Select your language.
Once on the desktop, select Utility in the menu bar.
Select Disk Utility.

Select the disk or volume in the list of disks and volumes, and then click First Aid.
Click Repair Disk.
Restart your computer when done.

Repair permissions after you reach the desktop-http://docs.info.apple.com/article.html?artnum=25751and restart your computer.

 

removing all annotations in preview for sharing

Menu Bar Doohickeys

Image by Adam Kuban via Flickr

As TeenTitan said:

If your using preview. You can actually pull up a list of all Annotations. Using this list you can select all the Annotations and then delete all the annotations at the same time.

How to do this:
in preview, with your PDF open.
go to the menu bar
click on the “View” menu
from the “view menu” chose “SideBar.”
from the submenu “SideBar” chose “Annotations”
On the right side of the PDF, Instead of a list of page you should now have a list of “Annotations.” click on any of the Annotations listed.
go to the menu bar
click on the “Edit” menu
choose “Select All”
Press the “delete” key

At this point you could use Save As to re-save the file as the ‘share friendly” version of the PDF.

via Apple – Support – Discussions – removing all annotations in preview for ….

 

“You are not connected to the internet” message

Disk Utility

Image via Wikipedia

Carolyn said:

If you didn’t repair permissions after installing the update, do that now.

Launch Disk Utility. (Applications/Utilities) Select MacintoshHD in the panel on the left, select the FirstAid tab. Click: Repair Disk Permissions. When it’s finished from the Menu Bar, Quit Disk Utility and restart your Mac. If you see a long list of “messages” in the permissions window, it’s ok. That can be ignored. As long as you see, “Permissions Repair Complete” when it’s finished… you’re done. Quit Disk Utility and restart your Mac.

 

via Apple – Support – Discussions –.