Choppy scrolling after upgrading to 10.4.9

I'm using an iBook G4 and recently upgraded to OS 10.4.9 via the Software Update utility. Since them, the scrolling in windows has been choppy. This happens whether I use the arrows, the scroll bar or the trackpad.
Did this happen to anyone else? I know it's a minor gripe, but it's bugging me so much that I'm wishing I'd left my system the way it was.

I am having the same issue. Since upgrading to 10.4.9 scrolling in OS X is painfully slow. For instance Safari and Textmate have a distinct jerky feel when scrolling, the pages lag and jump over the content.
Even pressing a down or up arrow on the scrollbar produces some sort of lag, and instead of a smooth scrolling behaviour the pages seem te scroll very slow onlky one line at a time (similar to the beats of a ticking clock).
I tried reinstalling Mac OS X and everything seemed back to normal. At that time I was runing 10.4.0, the moment I finished upgrading to 10.4.9 the sloppy scrolling returned.
Please have a torough look into this, it is something which much people probably don't bother about or even notice. I do. Something like scrolling should be trivial, now I feel as if I am running a 10 year old computer.
Note: this is certainly NOT a RAM problem since I have 1,25 gigs of RAM.
Also note that scrolling in Camino and Firefox is very smooth. Than again... CSSEdit (also using WebKit) also seems to suffer from the sloppy scrolling problem. So it seems to me that it is somehow related to a specific control of Aqua?

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Why did my mouse stop scrolling after upgrading to mavericks?

I have completely lost all ability to scroll with my Apple Magic Mouse after upgrading to Mavericks.   Why did this happen?   How can it be fixed?    It worked fine with Snow Leopard and Mountain Lion.

Everyone:
I was able to solve my own problem, after scouring the Internet looking for solutions. Sadly, the Apple Support Community was of no help.
Here's the full story:
I originally had purchased my iMac with Snow Leopard installed.   I loved it just the way it was, and really did not ever want to upgrade. However, I've been around computers long enough to know that I would HAVE to do it someday, only because of the age old problem of wanting to run some new application in the future, but not being able to, becasue the app would only run on the latest version of OS X. I reluctantly upgraded to Mountain Lion less than a year ago, without too many problems -- nothing I wasn't able to fix fairly easily anyway. When Mavericks came out, with the "offer I could not refuse" price of FREE, I knew I would eventually have to install it.
So the day comes when I'm finally ready to install Mavericks. To get ready for that day, I did the following:
I ran CCleaner on Mountain Lion to clear out any old files accumulated. (No longer works in Mavericks)
Made sure my Time Machine backup was up to date
Cleared out gigbytes of old files off my hard drive, and archived them on an external USB drive
Made sure every single app on my iMac was fully upgraded.
Made sure Mountain Lion itself was fully upgraded!
I then set aside a full day for the upgrade, knowing full well how long it could take, even with a very fast internet connection. Eventually I worked up the courage to go to the App Store, and proceded to download Mavericks.
The update seemed to go smoothly enough, no problems that I noticed. So I finally get to the point where I can sign on to my iMac again, opened up the Chrome browser, and found out that my mouse was was unable to scroll. I then opened up Firefox and Safari, and found that I could not scroll pages on those browsers either. As a matter of fact, I couldn't scroll using my mouse no matter what app I tried. That feature was completely lost.
I went to ' System Preferences --> Mouse ' to look at the settings, and only the most basic settings were available: click and speed, nothing at all for scrolling or swiping.   That's not good....
Looking to see if anything else was missing in System Preferences, I saw that there was no option for Blue Tooth at all. As a matter of fact, Blue Tooth was completely inoperative, and there was literally nothing I could do to make it work. The Mavericks upgrade had completely trashed Blue Tooth on my iMac. I have no idea how my wireless keyboard and Magic Mouse were even operational, Apple must have some sort of "back door" that keeps those two connected even when the entire Blue Tooth subsystem is off-line.
Since there was absolutely no way to fix this, given the damage done by the Mavericks upgrade, my only choice was to do a complete re-install of Mavericks. I did this by turning off my iMac, and then after turning it back on, I held down the command + R keys to initiate the "recovery" of my iMac, and re-installed Mavericks. There are screens the are displayed that walk you through the process, which is fairly easy and strait-forward.
This above process is a feature called OS X Recovery, and it has been present since Lion. Here's a link to an article that explains it more fully:
OS X: About OS X Recovery
http://support.apple.com/kb/ht4718
I did not know about this feature, but found out about it after doing various web searches in an effort to find a solution to my problem.
So, I basically ended up installing Mavericks a second time. This took hours to accomplish, but it worked.   After the second installation, I signed on, and sure enough, Blue Tooth was back in operation, and my Magic Mouse worked without any problems what so ever. I had full scrolling ability in all my apps.
So OS X Recovery saved the day, at least for me.
I should note that before doing the Mavericks upgrade on my iMac, I had already performed the upgrade on a family member's MacBook, without any problems encountered at all.   They were still running Snow Leopard, the orignal OS that came with their MacBook! Like me they were reluctant to upgrade, but eventually it becomes a necessary evil.
Here's hoping that this information may be of use to someone in the future.
Northwest Line
14 FEB 2014

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But wouldnt the cpu reach 100% capacity before it starts being the bottleneck?
Only if all the other components supply data fast enough that the CPU can run flat out. If the CPU has to wait for other components to catch up, CPU load will be less than 100%.
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I am trying to help out a composer who uses Logic Pro 9 on Mountain Lion. He has done all software updates so Logic is absolutey as up-to-date as possible.
He was on 10.8.1 and I recommended updating to 10.8.4
Ever since the 10.8.4 update, he is experiencing very choppy scrolling when scrolling up or down within Logic, but not left to right.
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DigitalDuderino wrote:
That is interesting info indeed. I appreciate it. I hope this can be fixed with a Logic or another 10.8.x update soon.
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Please read this whole message before doing anything.
This procedure is a test, not a solution. Don’t be disappointed when you find that nothing has changed after you complete it.
Step 1
The purpose of this step is to determine whether the problem is localized to your user account.
Enable guest logins* and log in as Guest. Don't use the Safari-only “Guest User” login created by “Find My Mac.”
While logged in as Guest, you won’t have access to any of your documents or settings. Applications will behave as if you were running them for the first time. Don’t be alarmed by this behavior; it’s normal. If you need any passwords or other personal data in order to complete the test, memorize, print, or write them down before you begin.
Test while logged in as Guest. Same problem?
After testing, log out of the guest account and, in your own account, disable it if you wish. Any files you created in the guest account will be deleted automatically when you log out of it.
*Note: If you’ve activated “Find My Mac” or FileVault, then you can’t enable the Guest account. The “Guest User” login created by “Find My Mac” is not the same. Create a new account in which to test, and delete it, including its home folder, after testing.
Step 2
The purpose of this step is to determine whether the problem is caused by third-party system modifications that load automatically at startup or login, by a peripheral device, by a font conflict, or by corruption of the file system or of certain system caches.
Please take this step regardless of the results of Step 1.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards, if applicable. Start up in safe mode and log in to the account with the problem. You must hold down the shift key twice: once when you turn on the computer, and again when you log in.
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Safe mode is much slower to start up and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal startup may also be somewhat slow.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Test while in safe mode. Same problem?
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Choppy scrolling after upgrading to 10.4.9

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