APC - undefined symbol: OnUpdateInt in Unknown on line 0

I'm trying to get APC (http://pecl.php.net/package-info.php?package=APC) to work with PHP 5.0.2 and Apache 2.0.49. I followed the instructions in INSTALL and it appeared to configure, compile, and install without any problems. However, no APC info appears in phpinfo() and this appears in my error log: PHP Warning: PHP Startup: Unable to load dynamic library './/usr/lib/php4/apc.so' - .//usr/lib/php4/apc.so: undefined symbol: OnU pdateInt in Unknown on line 0 or: PHP Warning: PHP Startup: Unable to load dynamic library './apc.so' - ./apc.so: cannot open shared object file: No such file or d irectory in Unknown on line 0 Anybody know what the problem might be? Thanks, CSN __________________________________ Do you Yahoo!? The all-new My Yahoo! - Get yours free! http://my.yahoo.com