strange include path error

PHP 5.1.4 on Fedora 2 I recieved a note from a client about a problem with their site today. Looking at the error log, i found that the DB connection script that's included into any other that needs it was throwing an error because MDB2.php couldn't be found: Failed opening required 'MDB2.php' (include_path='.:/opt/www/zijn2/htdocs/includes:/usr/local/lib/php') What's *really* weird is that the paths listed there are ancient--everything is in /usr/share/pear now, and the zijn2 one had been added--then removed--when i was troubleshooting something (it seems like a couple of years ago). I checked phpinfo() which shows the correct path. # uptime 19:41:32 up 282 days, 16:24, 1 user, load average: 0.13, 0.04, 0.01 # ls -l /usr/bin/php -rwxr-xr-x 1 root root 16466469 Aug 27 2006 /usr/bin/php Aug 27, 2006 + 282 days gives June 5, 2007, so it looks like the server was rebooted after upgrading. Unfortunately, i recieved the mail after my client split for a long weekend, and he didn't say what script he was trying to use (the error log only points back to the included script, not the original). But a quick scan of the site shows no problems at all. I also have no .htaccess files for this particular site, and the vhost conf checks out. Any idea what the heck just happened here? brian