adwise needed thanks

[cmay]

hi.
i just wanna ask what does it mean when you cant connect to the internet whit your browser or download via apt-get and the output of netstat shows
local adress <my ip i guess> foering adress <unknown> syn_sent
the is five different forering adresses none that i can get an id on via whois. is this me sending something or am i receiveing something ?
the rest says its connected but i have no acces to apt-get update og apt-get install and firefox is not showing me any pages at all
i am using anhoter computer to write this as i cant connect to the internet whit the one pc in question. that is a ubuntu machine.

please exuse me if this is an stupid question or wrong forum
but i dont know anything about how this internet stuff really works.
i just wanna have my computer up and runnning so i can read my mail.
thanks for any adwise in advance.

[cmay]

i was apparently hacked.

i found out how to use whois .
and a search gave me a record of banned ip adresses
and my intruder was on it.
any helpfull adwise will still be apriciated.
ps
i can post links to the site whit the lists of banned ip adresses.

[The Cog]

If you have really been hacked, you should re-format and reinstall because you can't trust any of the system any more.

However, sys-sent means the computer has sent a connect request to the remote IP address but has not received a response - neither a refusal or an acceptance. It is normally a sign of a network problem rather than a problem on your PC.

[cmay]

hi.
thanks for the response.
i know i have to reformat and i wanna try see what backtrack can do for me.
i have some whois outputs that i have searched for on the net.
there is as one of the first hits a site where one of these was blacklisted
anhother site was a hacker site about phising and online banking but the
actions i have taken is to report this via my internet provider and give them all the outputs from this whois thingy.
then they will have to deal whit it i figure.
i am quit amazed of how much information you can get from typing
netstat and whois int a terminal.
i think i will reformat and reinstall tommorow since i have found some strange things i dont understand using the backtrack live cd.
just to be sure.
i have really to start reading about this whole internet thing
one of these days.
thank you for the response.

[cmay]

problem solved.
i talked whit my internet provider and they have had an issue whit their network so from the tech stuff they told me i was not hacked .
the internet providers cables was being replaced in parts of the city and something was messed up . prebely why i got connected tt lots of random ip adresses.
nervermind.
ubuntu is quite safe it seems.:)
thanks for the responses .