I was getting this error in the console after upgrading to 11.10.
PHP Warning: PHP Startup: Unable to load dynamic library ‘/usr/lib/php5/20090626/sqlite.so’ – /usr/lib/php5/20090626/sqlite.so: cannot open shared object file: No such file or directory in Unknown on line 0
sudo rm /etc/php5/conf.d/sqlite.ini
to solve your problem
more info here