Internet connection log

NIS 2010 17.8.0.5

Vista Home Premium 32 bit, Vista SP 2

 

I have notice this several times in the Firewall-Network and connections log

 

It will show that I lost my internet connection and them almost immediately shows a reconnection. Most times its the same I address that I lost, but sometimes it is a new IP addresses assigned. I mean this has happened like 3 times in the last 4 days, when nobody was on the computer ( The computer was on and internet connected though)

 

Thinking it just may be normal, but it concerns me.