I just tried it myself, and it worked fine.

I am running Ubuntu 9.04 Jaunty 64-bit, all updated, works like a
charm. However there were multiple reports of it not working.

Patched with no issues or offset warnings. I'm running "make test"
(which doesn't really test the fpm portions, it would be cool to have
a test case for that written) to see if the PHP binary itself and such
at least considers itself sane...

compile on Xen VPS (Debian Lenny 64-bit) and the following error occurred

[code]
/home/user/src/php-5.2.10/sapi/cgi/cgi_main.c:1341:30: error: fpm/fpm_autoconf.h: No such file or directory
/home/user/src/php-5.2.10/sapi/cgi/cgi_main.c: In function 'zm_info_cgi':
/home/user/src/php-5.2.10/sapi/cgi/cgi_main.c:1345: error: 'PHP_FPM_VERSION' undeclared (first use in this function)
/home/user/src/php-5.2.10/sapi/cgi/cgi_main.c:1345: error: (Each undeclared identifier is reported only once
/home/user/src/php-5.2.10/sapi/cgi/cgi_main.c:1345: error: for each function it appears in.)
make: *** [sapi/cgi/cgi_main.lo] Error 1
[/code]

using the following configuration option
[code]
./configure --enable-fastcgi --enable-fpm --with-mcrypt --with-zlib --enable-mbstring --with-openssl --with-mysql --with-mysql-sock --with-gd --with-jpeg-dir=/usr/lib --enable-gd-native-ttf --without-sqlite --disable-pdo --disable-reflection --enable-force-cgi-redirect --with-gettext
[/code]