Comment 7 for bug 551193

Description of problem:
When attempting to load http://www.buffalonews.com/entertainment/moviestv/index.html Xorg crashes:

#0 0x0020161f in fbCopyAreammx (pSrc=0x8cdea90, pDst=0x8cb9620, src_x=0, src_y=3846, dst_x=18, dst_y=3871, width=920, height=60788) at fbmmx.c:2240
#1 0x00201776 in fbCompositeCopyAreammx (op=1 '\001', pSrc=0x8cf5030, pMask=0x0, pDst=0x8c304f0, xSrc=0, ySrc=3846, xMask=0, yMask=0, xDst=18, yDst=3871, width=920, height=64598) at fbmmx.c:2303
#2 0x001f24fb in fbComposite (op=1 '\001', pSrc=0x8cf5030, pMask=0x0, pDst=0x8c304f0, xSrc=0, ySrc=994, xMask=0, yMask=0, xDst=18, yDst=3871, width=920, height=178) at fbpict.c:1299
#3 0x00247eeb in XAAComposite (op=1 '\001', pSrc=0x8cf5030, pMask=0x0, pDst=0x8c304f0, xSrc=0, ySrc=-926, xMask=0, yMask=0, xDst=18, yDst=789, width=920, height=178) at xaaPict.c:536
#4 0x0070c8d8 in i830_xaa_composite (op=1 '\001', pSrc=0x8cf5030, pMask=0x0, pDst=0x8c304f0, xSrc=0, ySrc=-926, xMask=0, yMask=0, xDst=18, yDst=789, width=920, height=178) at i830_xaa.c:873
#5 0x0815e026 in cwComposite (op=1 '\001', pSrcPicture=0x8cf5030, pMskPicture=0x0, pDstPicture=0x8c304f0, xSrc=0, ySrc=-926, xMsk=0, yMsk=0, xDst=18, yDst=789, width=920, height=178) at cw_render.c:275
#6 0x0815a996 in damageComposite (op=1 '\001', pSrc=0x8cf5030, pMask=0x0, pDst=0x8c304f0, xSrc=0, ySrc=-926, xMask=0, yMask=0, xDst=18, yDst=789, width=920, height=178) at damage.c:541
#7 0x08147b23 in CompositePicture (op=1 '\001', pSrc=0x8cf5030, pMask=0x0, pDst=0x8c304f0, xSrc=0, ySrc=-926, xMask=0, yMask=0, xDst=18, yDst=789, width=920, height=178) at picture.c:1789
#8 0x0814d95f in ProcRenderComposite (client=0x8c6c5c8) at render.c:758
#9 0x0814acd5 in ProcRenderDispatch (client=0xafa4f000) at render.c:2005
#10 0x0808815a in Dispatch () at dispatch.c:459
#11 0x0806fab5 in main (argc=10, argv=0xbfefe174, envp=Cannot access memory at address 0xafa4f008

This also hoses my virtual terminals (ctrl+alt+F1 gives me a white screen) and I have to reboot to get them back.

Version-Release number of selected component (if applicable):
xorg-x11-server-Xorg-1.1.1-48.52.el5

How reproducible:
always

Steps to Reproduce:
1. Grab the latest Firefox 3.5:
http://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/latest-mozilla-1.9.1/firefox-3.5b4pre.en-US.linux-i686.tar.bz2
2. install it (bzip2 -dc firefox*bz2 | tar -x)
3. Run it (cd firefox; ./firefox)
4. Visit http://www.buffalonews.com/entertainment/moviestv/index.html

==> crash