Fw: firewall (iptables) interfere with sycoca/kio-file

[Thiago Macieira]

Otto Kekäläinen wrote:
>After doing may things (installing a fresh linux with new kernel) I finally
>found the problem. Apparently the firewall rules of iptables that I used
>were too strict, and it slowed (but no stopped) KDE's function. Problem was
>solved by letting all lo-device traffic go freely. So check your firewall
>rules if you KDE does not work well...

General system slowness is most generally caused by DNS timeouts. There are 
many, many tasks in KDE that perform DNS lookups, either on your own 
hostname, or on 'localhost' or on some other domain.

Now, depending on your configuration, your lookups go to a daemon on your own 
system: either named or nscd. That means localhost-traffic.

Another hint: don't block traffic on interface lo. There are also many other 
tasks that exchange information via Internet node-local sockets.

-- 
  Thiago Macieira  -  Registered Linux user #65028
   thiagom at mail.com           
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