Could these be made a little wider? The PM'ing dialog is especially narrow. I find that there's quite a bit of whitespace on either side of the dialog that I'm typing in right now, that the forum seems to be using, but just the dialogs don't extend that far. For instance, the "Welcome, maniacmusician" box that's near the top right is further to the right than this dialog.

I can live with the current "posting" dialogs, they're not that bad, but I think the PM'ing dialogs definitely need to be wider.