Slow FTP and lots of messages in the log

[PC_Arcade]

Oct 29 18:42:44 	ftpsesame[701]: #256 session not in statetable
Oct 29 18:42:44 	ftpsesame[701]: #256 session not in statetable
Oct 29 18:42:44 	ftpsesame[704]: #256 session not in statetable
Oct 29 18:42:44 	ftpsesame[704]: #256 session not in statetable
Oct 29 18:38:02 	pftpx[693]: #100 server timeout
Oct 29 18:38:02 	pftpx[693]: #100 server timeout
Oct 29 18:36:54 	pftpx[693]: #99 server timeout
Oct 29 18:36:54 	pftpx[693]: #99 server timeout
Oct 29 18:33:27 	ftpsesame[704]: drop: short capture
Oct 29 18:33:27 	ftpsesame[701]: drop: short capture
Oct 29 18:33:27 	ftpsesame[704]: drop: short capture
Oct 29 18:33:27 	ftpsesame[701]: drop: short capture
Oct 29 18:33:25 	ftpsesame[701]: drop: short capture
Oct 29 18:33:25 	ftpsesame[701]: drop: short capture

The FTP is running REALLY slowly, what do these messages mean?