PPP: VJ decompression error

[Debian User <parnald666@worldnet.att.net>]

What is causing this error in log's.  Relevant modules for ppp are:
ppp_deflate            39008   0 
ppp_generic            18120   3  [ppp_async bsd_comp ppp_deflate]
slhc                    4352   1  [slip ppp_generic]
kernel is:
2.4.18-686 #1 Sun Apr 14 11:32:47 EST 2002 i686 unknown
and this is in logs:
PPP: VJ decompression error
PPP: VJ decompression error
PPP: VJ decompression error
PPP: VJ decompression error
PPP: VJ decompression error
over and over?
pppd version is:
pppd version 2.4.1

Thanks to all that reply

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