[Tsung] Tsung 1.2.1 to PGSQL 8.1: invalid length of startup packet

[George Pavlov]

I just installed Tsung (ver. 1.2.1) and am trying to use it with a
PostgreSQL DB that is at version 8.1.10. I have everything configured
pretty much "by the book", with a very similar example similar to what's
here http://pgfouine.projects.postgresql.org/tsung.html

Tsung runs and the Tsung logs (or even the dumpfile, if enabled) don't
report any problems, but looking at the DB side it seems that the
connections are not getting far. Looking at the DB query log this is
what a typical session looks like (actually ALL of them look like this):

2008-01-14 14:59:23 PST [22818]: [1-1] LOG:  connection received:
host=xx.xx.xx.xx port=50129
2008-01-14 14:59:23 PST [22818]: [2-1] LOG:  invalid length of startup
packet

Makes me wonder if the pgsql module included with Tsung is compatible
with PG 8.1, or if there is some configuration that I am missing. Any
ideas much appreciated.

George