I had previously marked this as Fixed, but I am reopening until full compatibility with vBulletin 4.2.5 can be confirmed. So far there are a number of things that I found, notably that the option to disable logging of IP addresses will stop applying to wiki content in vB 4.2.5, and those IP addresses will now be logged. If this is inconsistent with a site's privacy policy, the policy should be updated to reflect this until a vBulletin 4.2.5-compatible VaultWiki release is applied.