While others above say 3.1 patch needs to be installed prior to 3.2 patch, that's wrong, or let me say redundant.
I posted it already somewhere, 3.1 patch files are 100 % contained in 3.2 patch files (i briefly compared 3.1 and 3.2 patch files).
People go save with the usual 3.0 installation plus 3.2 patch, if they use this thread/link here for the 3.2 patchfiles (i don't know about the other 3.1, 3.2 contents/links though, perhaps they offer something different).