Q: Preview trackpad scroll is occasionally freezing following OSX Mavericks install

This is very irritating!! The MacRumours Forum didnt work for me. Bring on the 10.9.1 with bug fix please!

I have the same problem when using preview with PDFs... "klicking" with two fingers on the file I'm scrolling helps in my case... although it's annoying (two finger scroll - klick - two finger scroll - klick)... I must say, these updates are somewhat weird... remove time from battery remaining. next update: remove scroll... wonder what's next

Same problem here :/

Worked for me too.

It was driving me crazy too; this solved it for me:

You can fix this by enabling "Always show scrollbar" under "General" in "System Preferences"

I'm bumping this old thread as it is the top hit in Google when searching for this issue.

Thanks to Conrad92:  http://forums.macrumors.com/showthread.php?t=1650687&page=2

If you use preview primarily for PDF documents, like me, and the freezing and unfreezing scrolling is driving you crazy, you can try this:

In Preview, go to Preferences --> PDF --> check the "Always show sidebar" option

Also, it might be easier if your scroll direction is not the "natural" direction that was introduced with Lion/ Mountain Lion, there seems to be less freezing for me this way. Go to Systems Preferences --> Trackpad --> Scroll & Zoom --> uncheck the "natural" direction option.

But for all other scrolling issues with Google Chrome or Firefox, I can't help, sorry! 

I did everything on the discussions forums.

1. Cleaned the corners of my trackpad and my trackpad as well. Not the issue. I keep my mac clean.

2. People suggest there might be water or humidity on the trackpad. Even though this isnt incorrect, it is *not* the case after Maverick upgrade.

Moreover this is the kind of suggestion that telephone support representatives offer for windows users. "Did you reboot your machine"? It might solve may novice users problem, I doubt it will rarely solve anyone's problem here.

3. I used the palm on the trackpad approach. This is to keep your palm on the trackpad, gently applying pressure for 12 secs. This solves the problem temporarily. Comes back again. For me I had to do this atleast 3 times a day.

4 -- The only actual resolution is to go back to mountain lion. I did it and happy now (for 2 months). No more trackpad going bezerk. Find out how to go back to mountain lion. I dont know if I can post the means here.

I cant believe why apple will let us down like this. Atleast give an option to rollback or provide a fix. Other than that, Mavericks is generally a lot slower than mountain lion.

having the same issue.

scrolling with 2 fingers on a brand new macbook air 11" running mavericks .. freezes.. and i dont want to display scrollbars all the time. i liked that feature

BetterTouchTool solves it, and has MANY great functions, like hotkey and trackpad window management. http://www.boastr.net/

The app looks nice but it is not a fix to the problem that started with Mavericks.

Mavericks is a realy good OS and it was a good move from apple to offer it for free but at the moment it has so many bugs it is just hard to enjoy it all the time.

Thanks, but this didn't work for me.

The scrolling only seems to freeze moving up and down in pdfs. As a workaround until Apple takes its royal time to provide a fix, I scroll ever so slightly right and left and for some reason it unlocks the up-down freeze until I stop scrolling. I have to perform this annoying extra step of left-right then up-down.

I'll see if I can jerry-rig it with Better Touch Tool. The continuing Apple motto: Search for third-party apps to address basic inefficiencies in Mac updates.

I believe the freezing problem is due to Mavericks new way of putting apps to sleep. It seems the app is put to sleep while the pdf is being read so by the time you're ready to scroll down, the app is asleep and has to be awakened before you can continue. It's a major pain.

Some apps can be told to not sleep by using "get info" on the app and checking the don't sleep option. However, the option isn't available for Preview.

Hopefully, someone will come out with a hack or utility that lets us turn off the sleep option for Preview.

This works for me (MBP 13 Early 2011) !

http://forums.macrumors.com/showpost.php?p=17764897&postcount=16.

Thanks!