Michel,

>I assume before doing that, you are firing the frame into a new window? Is that correct? As the UT main frame doesn't allow sizing of the browser, I expect this is what you are doing. I would need that info in order to make sure I fully understand the process.

No new windows are involved here.

1) start up the UT in a browser
2) click a message from the top right pane
observed - the message appears in the lower right pane, for me it appears 100% of the width (unless it's one of these odd narrow messages that don't consume the whole width)
3) resize the browser window smaller
observed - the lower right frame gets horizontal and vertical scroll bars
4) resize the browser window bigger than it originally was
observeed - the lower right frame loses the scroll bars, but the message doesn't take up the whole width

I'm running 1280x1024 IE 6.0.2600.0000CO Update version: Q306121

>I don't understand that one. Can you provide more explanations?

See the other message I just posted.