Very, very nice.
I have tons of txt files with CSS and XHTML snippets, personal notes, pat answers for a forum I moderate, etc .. this will come in useful.
And the UI is easy on the eyes, too.
I've had this problem once or twice across all of my domains, but it's usually the MT interface in general.
It's odd that it only happens with the comments page. Maybe open up a ticket with Sixapart or on the MT Support forums, since it doesn't seem to be a server issue.
It's so fun to hit Ralphie from A Christmas Story in the face with a snowball.
I found this game on the Elf DVD not last week. A couple other amusing ones, too.