After having my 60gb hd crash and die the other day I decided it's time to get that annoying crack fixed. My 4th mac and nothing but troubles between this one and my old iBook. I miss my iMac G3 special edition 
Yeah they've done that with both of my replacements too, I think it's one part/part number.oh yeh also wanted to say..Apple not only replaced my topcase but also also the keyboard, trackpad and button.
I've discussed this problem with a couple of "Geniuses" but it hasn't resulted in anything other than a referral to the local mac fixit shop. I guess I need to just go in and be more forceful. Ironically I'm planning to sell this one to buy a Santa Rosa/November '07 model, even though I think the case construction is utter crap compared to my old iBook. The Pro seems to be somewhat better made, but it seems silly to pay so much for something that's only marginally quicker for my needs.
Oh yeah by the way I don't have Applecare and I've had it for more than a year. One of the guys was pretty nice like trying to get me to "claim" I've had it less than a year but I figured they would look it up, so I didn't press the issue.
I purchased my MacBook in Sept. 07 at the Mac Store in Salem, OR.
Within 4 weeks, the first crack had formed under where the right palm rests, but right along the edge, just as in others' pix.
I took it back to the Mac Store, they said they had never heard of the problem, and asked if I'd dropped my computer.
I told them no, and I wanted it fixed. They said that for $100 they would download my info to keep when it's away being worked on, but they didn't know if the fix was covered under warrant.
I said that's bs. I took my MacBook home (40 mile roundtrip) to download it myself.
In the meantime, I called a REAL Apple Store (in Tualatin, 80 miles roundtrip) and the woman there said to bring it in and they would get it fixed, even though I hadn't purchased it there.
I'll be going up soon - in the meantime the case has split the same way on the left side.
I'm really glad I found this forum - I'll print out other examples on this forum, and take them along with me.
Apple (and the Mac Store in Salem, for that matter) SHOULD replace my $1200 computer, as far as I'm concerned, but I'm a realist.
Any recent MacBook purchasers had this problem?
I'll never again purchase a Mac from a Mac Store, only a genuine Apple Store for me!!
If it is Apple are denying it. I queried whether the design had been amended when I had mine fixed the second time and they were adamant that there was no problem so the design hadn't changed. Apple also claimed they'd never seen the problem before, despite the local store being so familiar with it they didn't raise an eye-lid when I called in and had the parts in stock for this very reason.I am hoping that the replacement part is made from stronger or less brittle material...
If it is Apple are denying it. I queried whether the design had been amended when I had mine fixed the second time and they were adamant that there was no problem so the design hadn't changed. Apple also claimed they'd never seen the problem before, despite the local store being so familiar with it they didn't raise an eye-lid when I called in and had the parts in stock for this very reason.
madmax-
see the poll above...
one out of three macbook owners state that they've had this identical defect, and from reading the thread many have had it more than once!
and this is just a very small sampling
if this was an auto defect, it would be one of the biggest recalls of all time!
The sad thing is, that it's a shocking problem, that's going to effect everyone in time. And so far mac has not even admited that this is even a problem even though they have had to replace thousands of top cases. Even from the random sample that this pole has given us, it is more than obvious that this is more than a minor problem> hell it's more than a major problem, it's a problem of epic proportions. If a company can't make a casing that can stand up the weight of some one's hands I'm seriously worried.
I had my top case replaced in November 07 and it cracked again just after Christmas. This is starting to bug me now.
When it cracked the first time they replaced it under "discoloration" so I'm not really sure if they're going to be willing to replace it again.
So much for my theory of a new plastic...
Is your MB still under warranty? If so, I imagine they should go ahead and do it.