How well the current fight with mummies over on the blog goes depends on a wide variety of factors. One of them, as I mentioned there, is how what the DM reports as damage translates to actual damage. Another, somewhat related, is which mummies we're dealing with; the 3.0 edition mummies are considerably different from the 3.5 edition mummies, as far as I can tell. (I'm assuming the description in the 3.5 System Reference Document is standard for 3.5, and I've got a 3.0 ed Monster Manual). One of them has "resistance to blows", in addition to damage reduction of 5. The newer edition only has damage reduction of 5, but has heaps more hp and strength to make up for it. Also, the 3.5 version of "vulnerability to fire" is less of a weakness than the 3.0 edition.

Of course, it's just as likely that Scott's using some mutant blend, or his own version of mummies. The last skeletons were home-grown, I'm pretty sure -- I don't think they could have taken or dished out as much damage otherwise, damage reduction vs. slashing weapons or not.

For what it's worth, I think these mummies are doing too much damage to be 3.0 version mummies.

Also, just for anyone who's wondering, Barik's next desperate tactic is to fall back, piling on the oil and keeping the golem beating on them until they burn out.