Steps to reproduce:
1.On solaris9, SUN mozilla1.4-b19, JRE1.4.2_02-B03
2.Launch mozilla and open http://www.mozilla.org/quality/browser/front-end/testcases/oji/test10.html
some applets can't display, and throw NullPointerExceptions.

If the test page includes more than one applets,most of them sent this exception, if you reload it time after time and this exception will gone. Maybe due to download time is overtime,then make this exception,but it can work fine before.