Another attempt to minimize server load! We'll go back to the old way if it doesn't help.
I've also temporarily upped sig character length to 1000, but turned off html in sigs. We'll deal with any problem sigs on a case by case basis, and see how it goes.
p.c. -- on the other vBulletin site i frequent, the attachment size is at 56K or so. You really can attach almost any image with that size, as long as you have some simple editing software to set the size. Just two pennies for ya..