Hi Willman,
That can’t be it. FTP logins are transient, and you can have multiple at the same time.
What do GoDaddy mean by saying “it should be working fine” ? That’s not very informative! If they control both the webserver and the FTP server, then they can, in about 2 minutes, stick a network trace on it to see exactly what it *is* doing, rather than what it *should* be doing.
Feel free to send me the FTP login details to [email protected] – then I can type them in to one of my WP installs, so that we can narrow it down to the particular webserver you’re on (rather than the code itself – though, given the size of GoDaddy as you say, it’s unlikely there’s a generic problem). I think I have seen cases where GoDaddy have firewalled servers before – I can find two cases of that in a quick search of our email archive.
David