[ by Melanie Gretchen ] Former UBS trader Kweku Adoboli, arrested on fraud and false accounting charges after it was discovered he lost $2.3 billion on unauthorized trades, executed yet another very big trade. Mr. Adobli "swapped" his lawyer from Kingsley Napley for a lawyer with Bark & Co.  Both law firms are London-based.  What's most surprising about the change in representation, is that it comes just 4 days before his next court appearance. Mr. Adoboli, 31, last appeared in court in November, at which time his lawyer chose not to enter a plea and instead requested an additional 4 weeks for his team to examine evidence and for his client to get more legal advice. Kingsley Napley is a highly regarded London law firm, having represented another 'rogue trader', Nick Leeson of Baring Bank, and currently representing Rebbekah Brooks, the former manager for Rupert Murdoch's News Corp. For more details, go to [Dealbook, 12/16/11].