Big problem with connection

[kini]

1st problem:
Everything is fine but after some time i can't open anything on machine.. I try to open domains, ip and sentora login - but still not working.
The problem looks like no internet connection. But connection is fine and can not be stopped.
After restarting machine everything's good..

2nd problem:
Sometimes i have this error and again after restart machine everything is good..

[Me.B]

Check the logs for more infos.

M B