I've never had a problem with attachments but There are some comparability issues, clicking on a poster's name doesn't bring up a menu and for giving reputation I'm forced to temporarily switch to Firefox. It's not a problem most of the time but it can be inconvenient some times.
EM, I've got the same problem.. Sometimes if I have to do both "copy image location" or "copy link location" to see whether it appeared. I'm using firefox.