I just realized the new skin doesn't have code in place to insert the automatically generated IRC channel lists that the old skin had. The php code should look something like this: <div class="suggestchannels"><?php $this->html('suggestchannels'); ?> </div> We'd also need to add the suggestchannels style to the css.
Looks like this got fixed on https://developer-stage.mozilla.org E.g. https://developer-stage.mozilla.org/en/CSS (Marking this as a blocker of bug 600834 to get it into the test process)
This doesn't need to block the upgrade to MindTouch 2010.
This issue is specific to Deki. Marking as dupe of bug 695740 which should be a Kuma bug requesting this feature.