in my opinion, Just a spelling name error on ur card might be a typo when they printed the card but on ur sevis record u have been already approved for opt and you can start working. Infact your International advisor is right that he/she told you that your 90 days already started as you have your EAD card which is approved.
Only last week my EAD card for 1 year had expired and since i am eligible for 17 month STEM extension I had filed the application for USCIS 2 months ago. But last week when I went to school to learn about going back to school for Master for spring quarter 2012, i met my international student advisor and she asked me how did i filed the application for extension for opt without requesting the new i-20 for opt extension. I didnot know that we gotta get new i-20 while applying for extension of opt which infact it is true as after completion of our study, we get new i-20 while applying for opt. Actually it is the same process but i simply didnot realize. My advispr told me that since i have not applied for new i-20 and my sevis is not updated for opt extension, they will reject my application. I asked her if she can issue me i-20 sinc emy application is still pending but she says no and wait for the decision by uscis. She scared me that it will get rejected and sinc emy opt had expired, i have to either file h1b asap or prepare to leave states within 60 days of expiration date or join another college.
I was tensed and ofourse becasue if it gets denied i had to stop working which i have a job at the moment and then have to find some random college just to be in status as the deadlines for fall and winter quarter has already passed by. But, couple days later, i got a letter from USCIS asking me to send new i-20 requesting opt extension and submit the documnet. I went to school and my advisor said, you are lucky... .
what i mean to say is, we do worry in very smalll things which is obvious that it will totallly change the life., which will totally ruin everything. if my application had denied, i would have been messed up >>>..
That's just sharing my story which will definitely good to know about some different cases of opt or what so ever .. . . .
good luck man and start working !!!!