[lanaer]

If you happen to like inline-block (which I do), you’ll break FF 2 fairly reliably, as well.

[ned]

I've always used -moz-inline-block for FF2, and it has worked for me so far, although PPK warns that it's not always the case: http://www.quirksmode.org/css/display.html#inlineblock

But at this point in time, I'd drop FF2 support (pixel perfection) for most projects.

[encoderer]

+1 for inline-block