If the number of incidents is really that high, this issue should have been picked up by reliablity monitoring systems already in the past (Maintenance Reports in ATA 52, I suppose) - especially bearing in mind the consequences of a malfunctioning door!
I wonder about the operating crews... Our staff would have raised this issue to maintenance VERY forcefully (at least some time ago, the A330/A340 bulk cargo doors had a tendency to be blocked due to freezing - therefore, no offloading of crew baggage, which resulted in angered phone calls, especially when a management pilot was involved...
..).
Or: Were there no write-ups!?
I am a bit confused at this stage...
The sun is shining - enjoy your day, folks!
J.V.