Supplemental updates to Lion

In addition to the Combo Update to Lion, Apple released this sequence of updates

Supplemental to Combo, and 10.7.5 Security Update 2014-004followed by 10.7.5 Bash update.

Backup your data first before applying these patches. The link below explains how.

Backup now, or forever hold your peace

If the patches still don't explain why you are having issues, be sure to mention you applied the patches on this tip when you start a new thread in the Lion forum.