Comment 14 for bug 289839

This bug is first appeared here:
(because I thought it was a Linux specific issue of Firefox
but later turned out that it also affected Windows version of the browser):
https://bugs.launchpad.net/ubuntu/+source/firefox-3.0/+bug/289839

I also made some research on it:
"I investigated the bug and found the cause:
hr with width 8388599 or less is OK
hr with width 8388600 or greater cause problem
Body background color must be set!

It is probably a 32 bit bug because 16777216/2=8388608.
(bit of sign)

And perhaps hr has padding or margin (2*4=8).

Someone could try it with a 64 bit version of Firefox.."