Urban Giraffe Support

I posted this in "feature requests" yesterday - I didnt realise I could id myself till after the fact so it seems it was posted anonymously ...in any case - I've noticed in Google Webmaster Tools lately I am getting notices that I have duplicate meta descriptions for pages and posts requested that have been deleted or no longer have post id's - (my site underwent several rebuilds migrating from Joomla to Joomla-WordPress finally to WordPress and I consolidated several sites into one, resulting in pages that no longer exist and / or exist under new id's (my old site(s) used the "ugly" permalinks) now(I have generally been redirecting them to the homepage or a random post using the redirect plugin, however some requests result in a page that IS NOT a "normal" 404 page (I am using AskApache 404 to maximaise the usefulness and SEO for THOSE) - the page I am talking about that is not a normal 404 page says, "Oh no! You're looking for something which just isn't here! Fear not however, errors are to be expected, and luckily there are tools on the sidebar for you ..." and there being no meta tags for the non-existent page, since I am using HeadSpace "nested", uses the global metatags - and duplicates the description - not good. For the time being as I find them I am I redirecting to a random post but I dont want google crying foul saying that /page or post randomly being redirected to/ (or /?p=xxx now has a dupe description of the deleted page / post. This could be especially bad (or at least I presume) if you redirect deleted posts / pages to your home page - the last thing you would seem to want is duplicate content of the most important page on your site - your home page!

What to do?

thx
RH