pbase runs on a bunch of different physical machines.
i think 17 different servers at the moment.
those particular machines do nothing but serve images.
do you think you're having trouble with only those particular machines?
unsure why a firewall would be blocking one but not the other, but you can test by looking at the following two images.
http://mikoga.image.pbase.com/u25/slug/ ... 9.20.5.jpg
http://image.pbase.com/u25/slug/medium/23.169.20.5.jpg
thanks,
-slug
btw, when linking to pbase from somewhere else, only use urls that start with
http://www.pbase.com or pbase.com or forum.pbase.com, etc.
the *.image.pbase.com machines aren't meant to be linked to, and might work or seem to work at first, but won't necessarily continue to work in the future, as the server architecture changes.