I got your PM, but don't use MSN nor provide support outside of these forums for this sort of thing, sorry.
The reply from chirpy in the thread link you've added since my original post seems to speak for itself, IMO. I'm not sure what more can be added to this other than to ask why is your FTP client showing up in your logs as doing port scans?
What FTP client are you using and have you checked your client settings for something that may be causing the problem on your end locally? Also, have you tried a different FTP client just to troubleshoot the issue?
Other ways around the problem (besides what chirpy has suggested in that thread) might include adding your IP to the bypass list so that you're not bothered by your systems firewall rules if you're the Administrator. And, as was already mentioned, if you must upload 60 or more files at one time, compress them first into a zip file and unpack on the server. With only one connection made to upload that compressed file, no blocks should take place. And btw is much faster than uploading 60 files 7 at a time.
If your FTP client is not letting go of the connection after a file is uploaded I suppose that could cause some problems with the max number of connections you make to the server, but why are they showing up as port scans and not too many connections block?
Hey, that was my 4,000th post! :p