Kerneltrap has the story:
GCC 3.2.1 (the last in the 3.2.x series, it seems) has been released. Lots of bugfixes in here. Notably, some MMX, SSE, and x86-64 bugs have been fixed.
Additionally, the method of constructing the list of directories to be searched for header files has been revised. If you specify a standard include dir with -I (for example: -I/usr/include), the compiler will ignore it; this is so you don’t change the search order for standard include dirs.
For more information, visit the GCC 3.2 changes page, or look at the Release Notes. This bug release follows GCC 3.2.0 which was released in mid-August [story].