Pages tear when scrolling vertically

Question

This is hard to describe, but, with Safari 1.3.1, OS 10.3.9, when I scroll vertically in Safari on SOME web pages (including some Apple pages), the top part of the screen will stay put, while the lower part seems to slide under the upper part. If I scroll far enough, it will suddenly jump into place. On some pages, this happens at different locations across the screen--it may have something to do with frames, dynamic menus, etc. IOW, maybe the center will slide under at a higher (on the screen) location than the right column. It's rather strange. I wondered if it could be some problem with my Kensington trackball with a scroll ring, but I swapped it for the Apple mouse and uninstalled the Kensington software, with no effect. Sometimes, clearing the cache (and, other times, clearing both Java caches) seemed to help, but not always. Also, I found the same problem with my PowerBook, which has never had any non-Apple input device software installed. Also, it happens in Safari and Shiira (which I think uses the same rendering engine as Safari), not in Firefox 1.5 (though the scrolling in Firefox is very jerky, as others seem to have mentioned) nor in iCab. (All except Safari are the latest versions; Safari is the latest version for Panther.)
Here's a page that shows the problem:
http://www.apple.com/quicktime/mac.html
The problem occurs whether I use the scroll ring on the trackball, the arrows on the vertical scroll bar, or click on the thumb button and move it. In some cases, using the page up and page down buttons will avoid the problem, but not always. Moving the cursor over some parts of the page will cause them to suddenly change, even without clicking/selecting anything.
Any ideas?

Answer 1

Hi George
I have had some strange issues like that, including the mouse curser slipping under the top of page. I use an apple mouse. i did not see the problem
when I clicked on the link u posted it took me to quicktime is that the page you meant?
Do you run permission repairs for & after software updates, though I do not know if it has anything to do with this it is a nesscessary maintance that helps things running well. Great L4s & some of their links.( organized by Red Dwarf in User Tips)
a brody = kmosx: General troubleshooting freezes
http://discussions.apple.com/thread.jspa?threadID=196767
a brody - kmosx: How to troubleshoot an X issue before posting
http://discussions.apple.com/thread.jspa?threadID=196766
Travis A. - kmosx: Regular Maintenance / General Troubleshooting
http://discussions.apple.com/thread.jspa?threadID=196761
Gulliver - kmosx: Updating MacOS X: Repair permissions!
http://discussions.apple.com/thread.jspa?threadID=121709
best regards, Eme :~{)
Message was edited by: Eme~ http://discussions.apple.com/thread.jspa?threadID=296514&tstart=0
Message was edited by: Eme ~~ last is link to user tips