also if you are using a router... DMZ your PS2.....
is the program using the default IP for your PS2? It took me forever to get it to read the IPCONFIG.DAT file.... now I use EXEcFTP to transfer most everything I need....
I have had problems with it hanging on HDD transfers... to the point of having t reboot the PS2... but with MC transfers I can just disconnect and reconnect to fix the problem....
PS3 Slim 320GB
PS2 v11 exploit w/300GB Maxtor
PS2 v10 exploit w/80GB Samsung - Network Games
PS2 v10 exploit w/60GB Samsung - Network Games
PSP 1001 3.52M33 w/10GB total storage
NDS DSReal 4GB