Cygwin Xfree not functional on laptop with wireless

[Browning, Jeff]

All:

I have installed Cygwin Xfree on my T40 laptop and yesterday when in the
office over a normal wired ethernet connection, it was working fine.

Today, I am working from home over a wireless connection, and Cygwin has
become completely non-functional. The bash shell shows nothing,
basically it's just dead. Running the startxwin.bat file from a normal
DOS window shows the usual start message. The X icon appears, but will
display nothing. Eventually, the X icon vanishes, apparently a silent
crash.

Any clue what is going on here?

Regards,
Jeff