EDIT:
We\'re in Chrome 19 now, and this still isn\'t fixed. Just a clarification: this happens in Chrome on Windows, not Linux or Mac. I think it has t
Okay, i've spend quite a bit of time on this and this is what it comes down to: It's a bug.
First of all, -webkit-font-smoothing:antialiased;
only works for Mac, not Windows.
I'm on Windows7, I've created a layered Pixlr image with screen shots of a JSfiddle I made that had 4 different elements with different text-shadow applied to each. You can clearly see that text-shadow has changed since Chrome13 and Chrome 14.0.835. I had to switch between the Beta and Dev channel a couple of times because I messed up, uninstalling etc. ugh.
Download the layered Pixlr image file I made from:
http://dl.dropbox.com/u/7353877/Chrome-text-shadow-v13-v14_0_835.pxd
Then go to http://pixlr.com/editor/ and choose to open file from computer, open the file. Now in Pixlr, zoom in to the four rows of text, in the layers panel on the top layer click the checkbox and uncheck it, then check it again, do it over and over and see how drastic the change to text-shadow is.
This should be submitted as a bug. A link back to this page could be used to show the effect, if needed.
JSfiddle (The JSfiddle I used in the screenshots) http://jsfiddle.net/nicktheandroid/Xkp9q/
I put a piece of pie in the microwave an hour and a half ago.... it's cold :(