Owenski

everything I'd think of is in that thread geodude posted the link to.
1: Clean - chain and sprocket (jus cos its good practise to do it)
2: Adjust - squid knows more than most so i dont even need to read his method... it'll be right
3: Oil - flush out the old and in with some new, making sure the levels etc are all good. just top it up if its just been serviced but make sure your checking it correctly (bike vertical not on stand etc).

In other words its something and nothing, only natural that you think everything which goes wrong with a new toy means it must be feck'd rarely its the case.