While playing warcraft III on wine (or virtualbox), I frequently get a crash on this assertion (get_dirty(state) == 0):

--- mesa-7.2.orig/src/mesa/drivers/dri/i915/i830_vtbl.c
+++ mesa-7.2/src/mesa/drivers/dri/i915/i830_vtbl.c
@@ -551,8 +551,8 @@
    }
 
    intel->batch->dirty_state &= ~dirty;
-   assert(get_dirty(state) == 0);
-   assert((intel->batch->dirty_state & (1<<1)) == 0);
+   //assert(get_dirty(state) == 0);
+   //assert((intel->batch->dirty_state & (1<<1)) == 0);
 }

Commenting the asserts works fine for me, nothing weird happens so far, so I guess either the state believes it's 0 when it isn't.
Anyway, the problem is an ugly crasher, commenting the lines fixes it, of course I'm sure there's a better fix, but that's as far as I got.