I'm running iceweasel on sid for amd64 and met same problem. iceweasel: 2.0.0.11-1 libcairo2: 1.4.10-1.2 With thease versions, iceweasel can not render some pages correctly. Most of text are dissapeared.
When I used iceweasel (2.0.0.11-1) with libcairo2 1.4.10-1.1, iceweasel got crashed in _get_bitmap_surface() in libcairo's src/cairo-ft-font.c (I made libcairo2-dbg to debug on my machine). So I backported a change in cairo-ft-font.c from new upstream of cairo (1.4.12), and iceweasel works correctly (no crash, no text are dissapeared). Diff of src/cairo-ft-font.c 1.4.10-1.2 and my own version is attached. I'm not sure this fix is correct, but hope this helps. --- KUSANO Takayuki <http://www.asahi-net.or.jp/~AE5T-KSN/>
--- libcairo-1.4.10-1.2/src/cairo-ft-font.c 2007-12-11 10:18:41.000000000 +0900 +++ libcairo-1.4.10-1.2+patch/src/cairo-ft-font.c 2007-12-11 10:07:28.062095832 +0900 @@ -735,6 +735,12 @@ width = bitmap->width; height = bitmap->rows; + if (width == 0 || height == 0) { + *surface = (cairo_image_surface_t *) + cairo_image_surface_create_for_data (NULL, format, 0, 0, 0); + return (*surface)->base.status; + } + switch (bitmap->pixel_mode) { case FT_PIXEL_MODE_MONO: stride = (((width + 31) & ~31) >> 3);