I've been running 3 qemu x86 instances with Debian stable here (2.6.26 kernel) as well as 3 Atheros ap61 / mips based routers with OpenWRT (rev. 19468, 2.6.30.10 kernel) for 22 hours. None of them crashed with Andrew's patch... so, sorry, still can't reproduce the bug you're talking about.
Cheers, Linus