phpPgAdmin login problem

Dear All

My pg_hba.conf is:

# "local" is for Unix domain socket connections only
local   all         all                               md5
# IPv4 local connections:
host    all         all         127.0.0.1/32          reject
# IPv6 local connections:
host    all         all         ::1/128               reject
$

but I always get "login failed" on phpPgAdmin, although I insert the
correct username/password. Any ideas?

Thanks in advance,

Paul