PROBLEM SOLVED.......UBUNTU FORUMS ROCKS

I would like to tell you that I am relatively new with linux.I didnt really like it at first but now I am just loving it.The very fact that Linux is an open-source operating system and is freely available to every person unlike its arch-rival Microsoft Windows, makes it so fascinating at least for me.

I faced a few problems when i first installed it on my system.Had to recover my windows after one week.I was disgusted, because the partitioning of my system was disarrayed and it took me two days to figure out how to fix it.But then I found out about a very efficient way to install Linux on my system.Click here to know more about it.

PROBLEM-
Anyways, now i had installed Linux (Xubuntu) on my system and was working peacefully on it and suddenly there was a power failure at my place.When power came back the modem restarted but the internet did not work so i simply rebooted the system & then it worked.Then there was a server failure on behalf of my Internet Service Provider.So again i restarted my modem but net did not work.So I re-entered my IP settings and then it worked.And today there were 5 power cuts within an hour and going through this cycle again & again just drove me crazy.

Then someone adviced me to post my problem on UBUNTU FORUMS.I did the needful and guess what......my problem was dealt with within an hour.
SOLUTION-
In such a situation first bring down and then bring up your internet using 'ifdown' and 'ifup' commands respectively.
For Example,
-->sudo ifup eth0
will bring up an ethernet connection but make sure you provide the correct interface.
You can use 'ifconfig' command to find your interface....

I found these commands pretty handy and hope these would help you out too.......