issues with wu-ftpd 2.6.2 on solaris 9

Hihi,

Anyone have encountered any issues with wu-ftpd on solaris 9.

There are intermitten error msg 425 can't build data connection with doing ls or get or put files.

I have did a sniff and from the sniffer logs I found that the FTP traffic is not using the standard protocol to communicate as below.

client:1077 -> server:21 SYN
server:20 -> client:1077 SYN-ACK
client:1077 -> server:21 ACK
server:20 -> client:33414 ACK-PUSH (returned in wrong port, correct port shld be N+1 which in case is 1078)

Anyone knows how to resolve this or there any patches or so?

Thanks in advance!