These are just some notes on how I got the ACM sigplan class style working with LyX under Ubuntu.
Strangely, after doing this (probably the texhash), my paper size changed to A4 from letter. To fix this:
Then, as is usual and baffling for me and Latex, the papers generated from LyX came out as A4 for a while, then went back to letter. I’m not sure if LyX is caching something somewhere, but that’s my guess.