NOOP command doesn't work

[d**k]

Okay, I just read some of the rules so here it is.
it is the registered version 2.1 build 924
Windows xp pro
netgear router model rp 114 and it is firewalled
Running Symantic anti virus
and I am using cable internet.
One of the sites are upload.comcast.net
Here is the FlashFXP timestamp:

NOOP
200 NOOP command successful.
NOOP
200 NOOP command successful.
NOOP
200 NOOP command successful.
NOOP
200 NOOP command successful.
NOOP
421 No Transfer Timeout (300 seconds): closing control connection.
Connection lost: