The Electoral Commission has now, I have discovered, reopened its investigation and hope to complete its inquiries before very long. The LibDems have maintained they did nothing wrong in accepting money from someone who they, at the time, thought was a permissible donor, even though it was clear from the most rudimentary of checks that Fifth Avenue Partners was not carrying on any meaningful businss activity in the UK.
Creditors of Michael Brown, such as former Manchester United Chairman Martin Edwards have threatened to sue the LibDems for the return of the money, which they say was not Brown's to donate.
Watch this space.
UPDATE: Apparently there was a written PQ on this last week.
Mr. Maude: To ask the hon. Member for Gosport, representing the Speaker's Committee on the Electoral Commission what progress the Electoral Commission has made in its investigation into the permissibility of donations by 5th Avenue Partners and Mr. Michael Brown to the Liberal Democrat Party. 
Sir Peter Viggers: The Electoral Commission informs me that the investigation into the permissibility of donations made to the Liberal Democrat party by 5th Avenue Partners is continuing. The Commission further informs me that its aim remains to conclude the investigation as quickly as possible, but that its priority must be to ensure that the process is fair and thorough.