None of my boxes ever allows wall anyway, so it's just not an issue for me. Or anybody I know.
Secondly, lets wait and see how long it takes Sun to release a patch. I bet it happens a lot faster than it would with MS. And after it is released, I'll bet a higher percentage of systems get the patch applied in the first 3 days than would happen with a MS system. Unix sysadmins actually pay attention and know how to apply a patch.
Being a MS sysadmin doesn't mean you have to be clueless, but there are a lot more people who fake their way into a job they just aren't qualified for in the Windows world than in the unix world.
Bingo.