NAB appears to have spent at least $30 million, and maybe the best part of $55 million, in the March 2009 half year in setting up the basis of its new core banking system, disclosures in the bank's financial report show.No banking applications are running yet on this system, based on systems supplied by Oracle and dubbed by NAB as its Next Generation platform.NAB's UBank brand, introduced in October, is intended to be the first product to be managed on NextGen. UBank at present runs on legacy systems, and continues to be a curious proposition; an internet banking brand without any internet-based banking services. NAB remains mysterious over the performance of UBank, other than to vaguely asset that it's trading ahead of expectations.The bank said that the "build for the online deposits capability" was "scheduled to be finished by the second half of 2009".While $30 million plus seems like a big spend for a tiny brand stretch, it is intended to be the test bed for the badly needed update of legacy systems.When NAB announced the NextGen IT program in August 2008 there was talk of another six months of blueprinting with Oracle to get it right, which would have taken the bank through to February this year.The bank then replaced Michelle Tredenick as the chief information officer with Adam Bennett who held the same post at NAB subsidiary, Bank of New Zealand, a management change that presumably slowed momentum on some IT projects pending his review.