1st time saw this kind of error, can somebody explain to me

[seachen]

normally i install no problem.

but this time got this error.

may i know what problem?

 

[zEitEr]

Error

Temporary failure in name resolutions

designates on misconfiguration your server (see /etc/resolv.conf) or your ISP's problems with DNS.

Does nslookup <anydomain> work?

 

[Dougy]

Error designates on misconfiguration your server (see /etc/resolv.conf) or your ISP's problems with DNS.

Does nslookup <anydomain> work?

Resolvers are bad.. or connectivity is busted. As zEitEr said.