Ah.. I'm a bit slow on the uptake sometimes.

So, instead of the daily call calling minnie in oz, it calls your website and downloads new guide data, if available?

Yeah, probably whats causing it (processor) I'm surprised there aren't a lot of other people having the same trouble. I think what I'll do when I re-image is not have any additional components running, other than what is on the image (remove tyserver/tyindex and another 1 or two that have slipped in).
Tried a prioritizer script, which seems to have made a teeny weeny bit of difference but theres still lag/no response at times. I'd re-image once a month if it was a lot easier if I had to