Well, the Ubuntu bug is wrt Hardy Heron, which is really outdated by now, the problem has been fixed in i915 driver a long time ago.
Also, pixman software scaling performance has improved a lot since with addition of SSE and SSE2 scaling - some versions back.
Please do review and apply the patch finally and stop holding Linux Firefox in 2009. This bug is forcing high resolution screen and Linux users to rebuild patched Firefox.
Well, the Ubuntu bug is wrt Hardy Heron, which is really outdated by now, the problem has been fixed in i915 driver a long time ago.
Also, pixman software scaling performance has improved a lot since with addition of SSE and SSE2 scaling - some versions back.
Please do review and apply the patch finally and stop holding Linux Firefox in 2009. This bug is forcing high resolution screen and Linux users to rebuild patched Firefox.