[expert] squid problems

[hamkas]

hi,
    i've got my proxy server up and running.  To go on the net, i have to pass
tru another proxy server.  now how do i set it up correctly?  i've put


cache_host <my.proxy> parent  80  3130  no-query  default        in my
squid.conf

but when i try it out, i'll see it connecting, connected and then waiting.  the
waiting part is the problem it  will after a while time out saying route
unreachable/server maybe down even thought the dns lookup succeeded.

TIA for any suggestions!