You're using a Mozilla, and I think the bug only nukes IE. It came up a while back when Tom posted a bug report about how your messages were coming up blank. That's when I figured out the correlation with the slashed-O, and I guess I should have publicized it more prominently. Sorry about that.

Ahh, I see what's hapening. Once I saw the auto-(n/t) function earlier, I took steps to disable is by dropping a single return in the message line. This was because I wanted to keep using the O/ in spite of the new convienent feature.
It's correlated with an empty message because it's synonomous for (n/t).

The messages are blank because there is no message that was typed, just a subject line. Not a bug, just a misunderstanding in terms of blank page. Now as to the O/ crashing IE, is this still the case?

I'll test it down below.