Improper painting while scrolling

Images in the plugin get sliced and are not being repainted properly while scrolling in the browser IE 5.0
It works fine with NS 4.6

Steps to reproduce

-On a windows 98 SE machine , Install the JRE for Merlin build 18 from :
    /net/sqesvr/deployment3/merlin/beta/win32.b18

- From the Plugin Test file :
      http://sqesvr/deployment3/status/merlin/JPI_QL_B18.html

Run the BAT tests - > 1.3 demo in IE5.0 browser.

Results :

When the applet gets loaded scroll the browser until it goes above the image ,
the image gets sliced and dosent get repainted properly.