LOL, you're not on ivillage boards are you? Those women are SO competitive with their babies' achievements.

Those women made me cry!
I'm sorry they made you cry!!
I laughed at your comment regarding iVillage though because I'm on ivillage all the time (even a cL there) but NOT on the younger age boards! I have 4 kids that are all over the gamut for things -- I had a hard time with the EC boards there by #4 because the debates that happen mean nothing in the end when the kids are 14. It won't matter at all -- for that matter when they get to be about 5 it won't matter so much.
I remember when my MIL told me DH was walking at 9 months -- this was when DD was 12 months, barely cruising -- I thought she was just getting old & forgot things because I couldn't imagine a 9 month old walking.
THEN I got one -- frankly....I wouldn't wish a 9 month old walking child on anyone. I was never so happy that the younger 2 were NOT walking at 9 months people probably thought I was crazy. However, he was standing at something like 6 months old -- the daycare had to move him up to the older baby room because he was just too mobile for the infant room (and basically would try to climb on anything!!!). THAT is not typical I don't think though. My 3rd one was totally content to sit and watch the world go by. He's still content to do that.
The ONLY time I need to remember when they did what as a baby is because my one son does have a learning disability, the other 2 get speech but for articulation (the poor little guy had no choice -- his model was his older brother who has articulation problems so when he learned to talk, he picked up the articulation errors!).
I would think as long as you are taking the baby for their check-ups and the doctor isn't worried about it, you are fine. I know it's so hard as a first-time mom though not really knowing what is OK & what isn't. Babies vary so very much, even their birth weight will make a difference on what they can do (I had BIG babies -- one was born at over 9 pounds, so took him a bit longer to have the muscle strength to turn himself over, etc...).