There was a Memo sent around to KLM handling agents last week, announcing that at the moment KLM are experiencing a lot of technical difficulties in their fleet of Fokkers. (even though this has been going on for at least a month).
Every day there is a list of deffects sent to their handling agents which usually consists of approx 15 registrations of a/c ranging from the F-50 right up to the F-100 (and thats just Fokker A/c thats operating).
They have warned that these will cause delays and possible cancellations to their flights but hopefully will be resolved soon.
I'm not sure of how many a/c if any that re currently out of service, and i know that no martinair a/c has come into CWL operating on behalf of KLM.