Hi there, I'm running MacTeX with LyX 1.5.2. If I set the Document / Settings / Float Placement to "Here Definitely", and leave all the individual float settings at "Use default placement" I actually get all the floats on one page.
However, if the Global Settings are "Here Definitely" and just one single float is individually set to "Here Definitely", then it works as you'd expect (with every float forced to the correct position). Anyone else get this problem? Mike.