FC4 Release causing YUM install problem?

We deployed a new Cpanel server the day after FC4 was released (we use base FC2 installs). I edited my yum.conf file to match my existing Cpanel server:

Code:

baseurl=ftp://download.fedora.redhat.com/pub/fedora/linux/core/$releasever/$basearch/os/

And when Yum executes I get:

Code:

retrygrab() failed for:
  ftp://download.fedora.redhat.com/pub/fedora/linux/core/2/i386/os/headers/header.info
  Executing failover method
failover: out of servers to try
Error getting file ftp://download.fedora.redhat.com/pub/fedora/linux/core/2/i386/os/headers/header.info
[Errno 4] IOError: [Errno ftp error] 421 There are too many connected users, please try later.

Is it safe to use alternative mirrors? If so, can anyone reccomend a few?

 

Thanks