Serious Mouse Problems with Mountain Lion

Yes, thank you for rasing this. I did try setting the double-click speed but it doesn't seem to stop the problem.

Another example of the problem experienced is when using itunes to sync my iphone with tunes. I click on an album, the tick appears and immediately disappears and I have to tick it several times until eventually it will stay in place. Frustrating.

It sounds like you are getting multiple mouse clciks in rapid succession.

If you cannot adjust the mouse parameters to suit you, you may need a different mouse. I hesitate to suggest this, but is there a software driver for that mouse THAT WORKS UNDER YOUR CURRENT MAC OS X ?

Yes, I've had serious mouse, dock, pointer issues since upgrading. I'm using a wired mouse, logitech LX3 on a MacBook Pro. The mouse was working perfectly before the upgrade. Issues:

1) Dock/magnify problem: I have 'magnify' turned on in the dock, and my dock is normally hidden on the left. When I approach the dock with the pointer, the dock appears and the first icon magnifies as normal. If I move the pointer along the other, the dock icons no longer track the mouse by magnifying in turn but remain in the initial state, although I can click on another icon to open the application.

2) Sporadic 'select/drag' problem (files or text): I select a file, the file icon 'ghosts' as normal and I can move it around, but I cannot drop the file anywhere. The same for links, text etc. Furthermore, the CPU starts to work overtime and the fan switches on. I cannot quit the application normally, and must force-quit (or restart the finder).

3) Right-click is no longer a CTRL-click. This is a two button mouse with scroll wheel in centre. Previously, right-click brought up the contextual menu. This no longer happens.

There have been reports of the Dock not behaving properly if upgraded while on the side. The bizarre solution has been to place it at the bottom for a while (perhaps across a restart?) then move it back to the side later. I dunno why this should work except that it may be another one of those old parameters carried forward problems that confuses the new version of the Dock.

Putting the dock at the bottom and then restarting resulted in proper behaviour, with magnification tracking the mouse. However moving it to the side resulted in the same behaviour as before: magnification does not track the mouse. If I unplug the mouse and use the macbook touchpad, the proper behaviour is restored, but plugging in the mouse again results in the 'bad' behaviour...using mouse or trackpad.

console messages reveal:

03/09/2012 14:13:41.003 Finder[201]: Error from CoreDragRequestDragCompleteMessage: -1850

and 'top' in the terminal shows Safari and 'WebProcess' using the most CPU if I select a piece of text in Safari and try to drop it somewhere

ouff... more, this time some interaction between mouse and quicktime:

I open a quicktime movie I made on my phone (before upgrading) and which used to play normally. Now it skips through the 28s movie in about 3 s, with no audio. I unplug the mouse and it plays normally. Plug the mouse in, it skips again....

Changing the multiple click setting in preferences seems to have solved the problem for me so far. I am using a Logitech mouse and there seems to be a lot of people with similar problems. I also had a problem with my wacom tablet after upgrading to Mountain Lion but that required a recently updated driver. Once the new driver was installed I have not seen problems.

I 've been searching for somebody that having exactly the same problem like I am but no luck. My macbook unibody white Mid 2010 has been using Lion for awhile then upgraded to Mountain Lion with full cloned of Lion backup on a spare harddrive, after running Mountain Lion for about 2 days then this thing happend, after back from sleep mode the touchpad has malfunctioned I can move the pointer around but I can't click anything so I connect my usb mouse and I got the same action the left button stop working and the only thing I could do was shut down by using power button. I switched on again for recovery mode to repair disk permission, I could select recovery mode but when the languages selection pop up the click button won't funcioning anymore.

This is the thing, if I connect my portable harddrive with OSX Lion using USB connection I can boot up to and the Lion is running just fine and all clicking issues has gone so I tried it on Mountain Lion again to make sure, the problem still there. I re-install everything with Mountain Lion and been using it for months until yesterday the same problem comes again. I am writing this on Lion which is running from my USB harddrive. I don't want to re-install everything again, please somebody help!!!

Anyone solve this yet? I'm having the same problems. All fine when I boot up in Safe Mode so assume it's OS-related.

I'm using wireless Logitech mice on a Mac Pro (at work) and an iMac (at home), both running OSX 10.8.2. The constant and insessant clicking issues are becoming a real problem! I'm barely able to move files in Finder, windows are randomly selected or deselected, heck, just trying to edit text is becoming problematic as text selections are randomly made and lost!!!

I've tried changing my double-click settings (no change), I've killed Better Touch Tool (the only mouse utitity I had installed, no change), I've *never* installed the Logitech drivers (so that can't be the issue), I've run through system wide cleaning, repair and cache clearing via Onyx (still no change), rebooting makes no difference, and my computers are barely usable.

What in the world is going on?!

For what it's worth, I restored my start-up drive from a Time Machine backup and haven't had the problme in the four days since. I hope I'm not jinxing myself!

I tried that but it didn't work for me. Only using the Time Machine backup worked.

Thank you for the reply. Unfortunately, this IS a fairly fresh install of Mountain Lion on a Mac Pro. Not even restored from a Time Machine backup, but a completely fresh install from scratch.

My iMac installation isn't that fresh (3 or 4 months?), but the issues are exactly the same.