Cannot connect to postgresql 7.4.2

pgAdmin3 ver. 1.2.0 Post Beta2 (Oct 09 2004) crashes when I'm trying to
connect to a postgresql 7.4.2 database. Same behavior if I want to add a new
server. Was tested only on postgresql 8.0.0?

Postgres log:
Oct 11 13:10:59 linux postgres[2248]: [1-1] LOG:  connection received:
host=172.16.2.49 port=1358
Oct 11 13:10:59 linux postgres[2248]: [2-1] LOG:  connection authorized:
user=test database=ts
Oct 11 13:11:04 linux postgres[2248]: [3-1] LOG:  could not receive data
from client: Connection reset by peer
Oct 11 13:11:04 linux postgres[2248]: [4-1] LOG:  unexpected EOF on client
connection

Virgil