Hi All,
This has been driving me crazy, finally was able to track down the 
cause.  I have a FTP service mapped through inbound NAT with m0n0wall, 
have a firewall rule for this, etc.  Everything works fine in active FTP 
mode, but sometimes, just out the blue, the "LS" command for FTP will 
stop working.  Lately it's gotten bad since I upgraded from 1.21 to 1.22 
image.

The testing I've done, when the LS command fails and hangs the FTP, I 
can FTP on the Internal network to the same server and everything is 
great. At first I thought the FTP server was the problem (maybe it still 
is), but as far as I can tell, m0n0wall is the only variable when this 
happens.  I'm using ProFTP for Linux, even have another separate Windoze 
box with IIS FTP (different IP address and everything), this one has the 
same problem happen to it as well.  The only thing common for all of 
them is the m0n0wall box in between the ftp servers and the Internet.

Any info or good troubleshooting would be greatly appreciated.

Thanks,
Michael

p.s. I tried to attach the config file to the bottom of this message, 
but the mail list keeps erroring out with the e-mail being too big.