I'm receiving a 235 response code from the PBSZ 0 command and it seems to cause an exception. I'm traping the exception and continuing, things seem to work. I believe that the 235 is a valid response.
DEBUG [com.enterprisedt.net.ftp.FTPControlSocket] 17 Nov 2005 21:12:14.781 : ---> PBSZ 0
DEBUG [com.enterprisedt.net.ftp.FTPControlSocket] 17 Nov 2005 21:12:14.843 : 235 PBSZ=0
com.enterprisedt.net.ftp.FTPException: PBSZ=0