server closed connection

I have been locked out from my own website and I think it's by my own firewall, but even when all firewalls, virus scans and spamkillers are off, I can't get an connection. I believe the problem started when I installed a new McAfee Virus Pack. I keep getting this message:

[18:20:47] Resolving host name "ftp.urbanoutline.co.uk"
[18:20:47] Connecting to 66.98.206.44 Port: 21
[18:20:47] Connected to ftp.urbanoutline.co.uk.
[18:20:48] Server closed connection

and it driving me nuts.
I have also tried connecting through other ftp providers, but with the same result.

Where am I going wrong, please help

rgds
Urban

Hi, that ftp server is down. It's not your or SmartFTPs failure.

Ah, no wonder. Thanks

Hi, that ftp server is down. It's not your or SmartFTPs failure.

Hi, that ftp server is down. It's not your or SmartFTPs failure.

I just had this problem on both of my ftp connections, one is hosted by my university and the other is a paid hosting that I use. Both the websites were fine, and sporadically I could transfer a file or two on both connections. I disabled public ftp on my own hosting account, but I checked my university's and it works fine, so the FTP server is obviously up as well.

Further, the problem started without me having made any changes to anything. I was just uploading as usual, and all of a sudden it told me transfer failed.

It's SmartFTP's problem.