Upgrade from 2.6STABLE14 to STABLE17 with "Invalid capability version 0" message

["Uto Cen" <utopian.centaury@xxxxxxxxx>]

Hi,
after upgrading the squid on Linux (2.6.9), I receive the "Invalid
capability version 0" message in the log.
What does the line mean, and more importantly, will that impact stability?

Thanks, Uto