Credit quality indicators were mixed at Bank of Queensland in the November 2011 quarter, the bank's "pillar 3" disclosures shows.BOQ reported a rise in impaired assets of $A21 million to A$442 million over the quarter. Most of this rise was in loans classed as "other retail".Loans 90 days or more past due fell by $15 million to $447 million.The bank said that its gross credit exposures fell by about $2 billion over the quarter to $71 billion, with most of this fall in off balance sheet exposures. BOQ's residential loans increased by $200 million, or about one per cent, over the quarter to $24.1 billion.