This is not the first time that France has done something like this.

Anyone remember the reports from Bosnia when we were trying to stop Serbia's ethnic cleansing?
It was widely reported that a fairly senior French military officer had leaked sensitive intelligence information to some senior Serb leaders wanted for war crimes allowing them to escape. In other words, they were warned by France that we knew where they were & they were about to be raided by special forces.

As a direct result of this, the US does not share a lot of sensitive intelligence information with most of Europe. The UK is in a different position here, as it is regarded as 'trusted partner' by the US which will not leak sensitive information.

This does have a significant bearing on what happened in Iraq, as the UK would have had access to a lot of information that France & the UN did not have, which partly explains the willingness of the UK to join with the US. The big question is whether or not this intelligence was correct, as you would have expected evidence of WMD to have been found by now.