Problem with I-797c Date

Dear Sir/Madam,
I got my H1B approved in 2009. Recently I saw that my I-797C form, states that my "Valid from" is from10/1/2009 to 3/29/2012. This is strange, since most of my buddies have it till 9/29/2012. Is this an error. Can I legally stay till Sep, i.e. till H1B is renewed? Do I need to do anything? Kindly help me as this is bothering me a lot.

Thanks in advance
Ravishekar (Ravi) Kannan

What does your I-94 state?

You should expect that you will have to renew your H1B prior to March 29, 2012, not September.

Thanks friend,
One more quick question : Can the renewal be done any time of the year? i.e. is it unlike the first time H1B filing, which can be done only in April.

will be grateful if anyone answers this.
Thanks
Ravi

Quote:

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Quoting Mr. Knowitall

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What does your I-94 state?

You should expect that you will have to renew your H1B prior to March 29, 2012, not September.

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You can apply for an extension starting six months before your H1B visa expires.