I have a laptop HP Compaq nx6125 with AMD Turion 64 and integrated video card
ATI Radeon Xpress 200M 5955. I'm runing Linux Kernel 2.6.17 and Xorg 7.1 with
mesa 6.5. When I run and exit Celestia 1.4.1 (an OpenGL Solar system simulator)
Xorg crashes and restarts. Here is the backtrace I get:

#0  _mesa_update_draw_buffer_bounds (ctx=0x0) at framebuffer.c:360
        buffer = (struct gl_framebuffer *) 0x25b
#1  0xb59aa970 in _mesa_resize_framebuffer (ctx=0x0, fb=0xb7a7b008, width=1018,
height=603) at framebuffer.c:309
        i = 19
#2  0xb5a99ccd in xmesa_resize_buffers (ctx=0x0, buffer=0xb7a7b008, width=1018,
height=603) at xm_dd.c:583
No locals.
#3  0xb5a9b206 in XMesaResizeBuffers (b=0xb7a7b008) at xm_api.c:2662
        winwidth = 1018
#4  0xb5a9ab70 in __glXMesaDrawableResize (base=0x8cd0870) at xf86glx.c:114
No locals.
#5  0xb7beabaa in PositionWindow (pWin=0x874dee0, x=3, y=114) at glxscreens.c:192
        pScreen = <value optimized out>
        glxc = <value optimized out>
        ret = 1
#6  0x080745c7 in ResizeChildrenWinSize (pWin=0x8d758b8, dx=0, dy=0, dw=0, dh=0)
at window.c:1854
        pScreen = (ScreenPtr) 0x81fdf78
        pSib = (WindowPtr) 0x8d75960
        pChild = <value optimized out>
#7  0x0811f7da in miSetShape (pWin=0x8d758b8) at miwindow.c:1019
        pScreen = (ScreenPtr) 0x81fdf78
        anyMarked = 1
        pOldClip = <value optimized out>
        bsExposed = <value optimized out>
        dosave = <value optimized out>
        pLayerWin = <value optimized out>
#8  0x0812aa0a in RegionOperate (client=0x82a4090, pWin=0x8d758b8, kind=0,
destRgnp=0x8583088, srcRgn=0x8cce458, op=0, xoff=0, yoff=0,
    create=0x812a3d0 <CreateBoundingShape>) at shape.c:255
        pScreen = (ScreenPtr) 0x81fdf78
#9  0x0812ac28 in ProcShapeRectangles (client=0x82a4090) at shape.c:379
        pWin = (WindowPtr) 0x8d758b8
        prects = (xRectangle *) 0x8db9bf0
        nrects = 3
        ctype = <value optimized out>
        srcRgn = (RegionPtr) 0x8cce458
        destRgn = (RegionPtr *) 0x8583088
        createDefault = (CreateDftPtr) 0x812a3d0 <CreateBoundingShape>
#10 0x0808699d in Dispatch () at dispatch.c:459
        result = <value optimized out>
        client = (ClientPtr) 0x82a4090
        nready = 0
        start_tick = 54760
#11 0x0806e73e in main (argc=8, argv=0xbfb03af4, envp=Cannot access memory at
address 0x263
) at main.c:447
        pScreen = <value optimized out>
        i = 1
        error = -1078969576
        xauthfile = <value optimized out>
        alwaysCheckForInput = {0, 1}