When you can search multiple values (like for a radio field, "is one of", the pagination is broken in Joomla 1.0 with SEF on, and Joomla SEF issues notices.
Nothing to worry about, but still broken, and needs a fix.
This issue has been addressed and fixed in Community Builder 1.2 RC 3, like all other known issues, and is available now for a last short rounds of live site testings, before CB 1.2 Stable release.