Earlier I had deleted the FSX.cfg and let FSX rebuild one. The pole was still there.
You said you switched from SP2 to Acceleration. So, it's possible IT IS a video driver problem, which only affects FSX SP2, but not Acceleration, for some reason. But the original issue is something related to the video driver or, at the very least, the FSX graphic engine.
The only thing sure, it's not a problem of the scenery. Fact that happens only with later Zurich version, is because in previous versions the terminal windowblinds weren't separated objects, now they are. The "pole" some people see, is one of the windowblinds which is rotated for some reason. But of course we haven't modeled it that way, if we did, it would appear like that to everyone under every condition. A problem with a translation/rotation matrix, is usually due to video ram corruption.