Currently Being ModeratedDec 25, 2012 9:10 AM (in response to Konstantin)
Do you have any third-party driver software you installed to either manage a secondary mouse (e.g., one from Logitech) or enhance the input of your Apple-provided mouse? If so then remove this software and see if the problem persists. If you start your computer in Safe Mode (hold the Shift key at startup), do you see the problem continue when in this mode?
Currently Being ModeratedDec 25, 2012 10:10 AM (in response to Topher Kessler)
I didn't install any mouse specific third party software and I actually never used an external mouse on my mac.
Interestingly the problem persists in safe mode, although I have to add that safe mode seems to be generally slow and a little unresponsive, which could just pretend the same problem...
Currently Being ModeratedDec 25, 2012 2:35 PM (in response to Konstantin)
Safe Mode turns off many extensions that add functionality to the system, including graphics drivers, so the system will be slower when in this mode, but it does help determine if a third-party extension (which will be off in this mode) is responsible for the behavior.
Try creating a new user account in the Users & Groups system preferences, and then log into this new account to see if the problem persists there (you can always delete the account when done, and doing this will not harm your current files and settings). This will help indicate if a problem lies with a setting used by your user account.
Currently Being ModeratedDec 26, 2012 6:45 AM (in response to Konstantin)
Mouse behaviors are stored in the account's "General" preferences file, which is a hidden file in your account's preferences folder. Odd settings in this file may result in the problem, so try clearing it by running the following command in the Terminal:
defaults delete -g
Follow this by logging out and logging back in to your account.
This settings file does contain some details such as your recent places, language and location settings, custom hotkeys, and similar items, so these will be lost; however, they should be relatively easy to set up again.
Currently Being ModeratedDec 26, 2012 7:15 AM (in response to Topher Kessler)
this seems to work! although one little problem seems to remain, which is also not present in the other user account: in safari on certain websites some pictures are loaded immedeately but for others a white frame is shown and pictures are loaded with a 2 or 3 second delay, the pictures are of equal size
is there another set of settings for safari that needs to be reset? a mere safari reset did not help
Currently Being ModeratedMar 20, 2013 6:50 AM (in response to Konstantin)
I have recently experienced the same problem with my MacBook Air. Intermittently, clicks wouldn't register, whether input by tapping or clicking on the trackpad or through an external mouse. Apple's hardware test, various software checks didn't shown anything wrong. Most amazingly, the effect has been subsiding: With a few days having passed, clicking works almost normally again. I am wondering now whether moisture entering the internal USB controller could cause clicks not registering. In that case, barring disassembling the machine, a combination of patience and keeping it in a warm, dry place might be worth trying.