Senior lawyer Stuart Grieve QC has been given security clearance and appointed to the Kim Dotcom case.

The saga of the Ministry of Social Development's failings certainly drew attention away from that ugly wart of what John Key knew and when about Kim Dotcom, writes Claire Trevett.

John Key has corrected statements he made in Parliament about when he was first told about the Dotcom case by the Government Communications Security Bureau.

Prime Minister John Key will this afternoon correct the answers he gave two weeks ago to questions about what he was told about Kim Dotcom by the GCSB.

Our hopeless GCSB spy service are absolutely culpable for turning a simple exercise into a farce, writes Bob Jones.

Labour leader David Shearer must be wishing he had never mentioned a recording of a remark the PM is said to have made to staff at the GCSB.

John Key has challenged Labour leader David Shearer over claims there is a tape of the Prime Minister discussing Dotcom on a visit to the Government Communications Security Bureau (GCSB) months before Mr Key originally claimed to know the agency was linked to the Dotcom case.

Labour leader David Shearer has refused to comment on reports that his press secretary's partner was the source for apparent GCSB leaks.

Kim Dotcom has issued a call for whistleblowers to leak information about his case to the media in the wake of spy and police blunders.

The GCSB started an investigation into its staff last night after the Labour leader said he'd been leaked information about John Key's knowledge of the Dotcom case.

Labour claims a recording exists of John Key mentioning Kim Dotcom in a visit to the Government Communications Security Bureau in February, earlier than Key said he knew of surveillance.

A United States judge has allowed the case against Megaupload to proceed after throwing out an appeal from its founder Kim Doctom.

John Key insists he knew nothing about Kim Dotcom before this year, as new evidence reveals his office was told about Dotcom's bid to buy a Coatesville mansion last July.

John Key's explanation of how the illegal spying on Kim Dotcom occurred is wrong in law and could not have happened the way he describes, legal experts say.

Kim Dotcom and the Megaupload case was raised with Prime Minister John Key at a dinner attended by top movie moguls in Los Angeles last night.

Kim Dotcom's internet connection was being diverted inside New Zealand weeks before the Government Communications Security Bureau says it started spying on him.

Despite John Key's insistent denials, it now seems to be the case that he actually was briefed by the GCSB on its eavesdropping on Kim Dotcom at a session in February, writes John Armstrong.

Kim Dotcom was mentioned to the PM during a briefing he received from GCSB a month after the Dotcom raid, as an example of how the bureau worked with police.

Opposition parties are pushing for an independent review of the GCSB-Dotcom affair after a top lawyer with close ties to police was hired to look into the matter.

The GCSB and Police are far from off the hook, writes Bryce Edwards. "The Police, in particular are facing the heat over the question of whether they lied in court."

The guerrilla performance artist Kim Dotcom pulled off the greatest dotcomedy of his career last week - making NZ PM John Key a laughing stock, writes Chris Barton.