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/Peo, FreeWebSpace.net
You should contact your web host or reseller provider (if you have one) & ask them if your IP address is listed in there brute force (if they use it), this software stops you from logging into FTP if you fail login allot of times, just contact them & see what they say .
looks to me like they have anonymous ftp disabled and are using pure ftp and you are using internet explorer to access your site ftp. Try using a true ftp program like smart ftp and you will be fine