[Zope] Zope 2.7 FTP Bandwidth Limiter?

We're experimenting with Zope 2.7, and are currently unable to get FTP transfers to go any faster that 10k/sec. This seems to be some sort of arbitrary limit, as we have plenty of bandwidth and horsepower available. Indeed, we can pretty much make as many FTP sessions as we want simultaneously, they just all go at 10k/sec. Was there some sort of limiter or throttle introduced somewhere along the lines that I am unaware of? --- Edward J. Pollard, B.Sc Webmaster, University of Lethbridge