Help need regarding commons-Net

Hi,
I'm using Commons Net API for accessing the list of files from FTP. But I'm
getting following exception for a single user on a single Server otherwise
it is working fine for others. Please help me in this regard.

07/31/2008 12:53:55 [ERRR] EXCEPTIN STACKTRACE STARTS
07/31/2008 12:53:55 [ERRR] (Unknown Source)
07/31/2008 12:53:55 [ERRR]
sun.nio.cs.StreamDecoder$CharsetSD.readBytes(Unkno wn Source)
07/31/2008 12:53:55 [ERRR]
sun.nio.cs.StreamDecoder$CharsetSD.implRead(Unknow n Source)
07/31/2008 12:53:55 [ERRR] sun.nio.cs.StreamDecoder.read(Unknown Source)
07/31/2008 12:53:55 [ERRR] java.io.InputStreamReader.read(Unknown Source)
07/31/2008 12:53:55 [ERRR] java.io.BufferedReader.fill(Unknown Source)
07/31/2008 12:53:55 [ERRR] (Unknown Source)
07/31/2008 12:53:55 [ERRR] (Unknown Source)
07/31/2008 12:53:55 [ERRR]
(FTPFileEntryParserImpl.java:95)
07/31/2008 12:53:55 [ERRR]
(FTPListParseEngine.java:150)
07/31/2008 12:53:55 [ERRR]
(FTPListParseEngine.java:98)
07/31/2008 12:53:55 [ERRR]
(FTPClient.java:2396)
07/31/2008 12:53:55 [ERRR]
(FTPClient.java:2364)
07/31/2008 12:53:55 [ERRR]
(FTPClient.java:2141)
07/31/2008 12:53:55 [ERRR]
(FTPClient.java:2188)
07/31/2008 12:53:55 [ERRR]
(Unknown Source)
07/31/2008 12:53:55 [ERRR]
(Unknown
Source)
07/31/2008 12:53:55 [ERRR]
(Unknown Source)
07/31/2008 12:53:55 [ERRR]
$000(Unknown Source)
07/31/2008 12:53:55 [ERRR]
$2.run(Unknown Source)
07/31/2008 12:53:55 [ERRR] EXCEPTIN STACKTRACE ENDS

Regards
Safwan