Audio Pitch issue

Hi, we have 5 FCP machines and one has developed an issue with audio pitch, everything we import has low pitch audio that is out of sync. We are working with DV PAL from an XSAN. The only fix we can find is to change the sequence to 44.1kHz but the media is actually 48kHz.
Any ideas?
FCP v 6.0.4

I am getting the same issue with any audio I import to a project. Did you find a fix? If not, if someone could help us out that would be great.

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