I serviced my Cube over the weekend, did the Oil & Filter, Sparks and K&N Air filter. Nothing unusual in it's self.
However the first thing I did was to replace the Air filter, then take it out for a short run to warm the oil up before I changed it and found the car changed up from 1st to 2nd alot more smoothly on a cold start. I though I would bring this up as I know we have discussed this cold start change up lurch issue before on the fourm some time back, with concerns about failing gearboxes, bad ATF fuilds, etc.
This might be an answer to the problem, if it bugs you like it did me. I did fit a new factory air filter about year ago and did not notice the change with that one. I will monitor it over the next few months and keep you all posted if the issue re-occurs.