Hi dango, certainly just before the Windows app was launched, one of the Beta runs was to test that a new server at Harvard could cope with the expected increase in dl/ul bandwidth. As to whether the Linux server was switched over or kept feeding that particular platform's needs, I don't know - it may have been switched, although I've never read of such a comment being made on these forums. On a personal basis, I'd have thought that, if the system allows it, then it'd make sense to keep both the old and new servers running - the old, serving Linux whilst the new serving Windows/Mac.

Obviously, only the WCG techs/Harvard bods can confirm this.