Apache Solr Search Integration and PHP 5.3 in Ubuntu 10.04

Apache Solr Search Integration module seems stable enough with php 5.3 except for the following issue. Under the title of my posts (http://vladgh.com) I have a list of taxonomy terms grouped by vocabulary (categories and tags). Clicking on any of those links gives me the error:

warning: get_object_vars() expects parameter 1 to be object, null given in /srv/vladgh.com/sites/all/modules/apachesolr/apachesolr_search.module on line 937.

With these errors I usually look for &$ in front of the mentioned parameter (in this case $response) but here nothing works.

Apache 2.2.14-5ubuntu8
PHP 5.3.2-1ubuntu4.2 with mod-php
Tomcat 6.0.24-2ubuntu1
Solr-Tomcat 1.4.0+ds1-1ubuntu1
Drupal 6.17

Thank you in advance,
Vlad.