After getting three mbp's and noticing issues even with the display models in my local apple store I do not think plague is too strong of a word. Yes, there will always be a few lemons here and there with any new product but I think apple's rate of faulty products is WAY higher than it should be. If the new notebooks were not plagued by issues then amung all the display models in the store and the three I had to return there should have been at least one good one. Yes, some people get lucky and get a flawless one, and some people just choose to ignore minor defects. All mbps I saw had loose hinges. All mbps I saw had warped lids. Two of the ones I had to return felt as if there was something clunking inside teh case when lifted even when it was turned off and one had a bad optical drive. And I personally did not get one that had a loose battery cover or slanted keys but there have been reports of mbps with those issues. So I'm going to say yes, the mbp is going to have the same issues as the mb.
Of course, I'm annoyed b/c of my bad experience, and I know there are mbp's and mb's out there that are flawless. I do still intend to buy this product in a couple of months as it is a beautiful notebook and it runs really well. It just has a bunch of niggling details that are a bit off. I'm hoping when I buy next time I'll get lucky and get a good one.