i keep "sticking" after getting connected...

Essentially what happens is that I'll log into an ftp no problem, but then when the log gets to the point of:
"150 Opening ASCII mode data connection for /bin/ls."
the whole process will stop right there. No files or folders will load up, and I inevitably time out. Does anyone know what's going on? Thanks!

(I really dunno if any of this will help, but this is the text that pops up after I get logged in:

230 User logged in, proceed.
SYST
215 UNIX Type: L8
FEAT
211-Extension supported
AUTH TLS
PBSZ
PROT
CLNT
MDTM
MDTM YYYYMMDDHHMMSS[+-TZ];filename
SIZE
SITE PSWD;EXEC;SET;INDEX;ZONE;CHMOD;MSG
REST STREAM
XCRC filename;start;end
211 End
Detected Server Software: Serv-U 4.x
CLNT SmartFTP 1.0.981
200 Noted.
PWD
257 "/" is current directory.
TYPE A
200 Type set to A.
Connecting IP Repeater "repeater.smartftp.com" ...
IP Repeater returned: "69.195.7.62"
PORT 69,195,7,62,6,129
200 PORT Command successful.
Opening data connection IP: 69.195.7.62 PORT: 1665.
LIST -T
150 Opening ASCII mode data connection for /bin/ls.

And then that's where it stops. Thanks!