I am getting very irritated at Steam because sometimes it can't seem to connect to Online mode, especially now that if it happens I can't play Modern Warfare 2... 
When I boot the computer up, it says that Steam cannot connect to the online. Then when I try to startup a Steam game nothing happens for ten seconds then it says 'Steam is updating' and no matter how long I leave it, nothing happens.
Please does someone have a solution to this problem?
Thanks in advance.

When I boot the computer up, it says that Steam cannot connect to the online. Then when I try to startup a Steam game nothing happens for ten seconds then it says 'Steam is updating' and no matter how long I leave it, nothing happens.

Please does someone have a solution to this problem?

Thanks in advance.
