Membership plugin not reliably gating content

WordPress 3.0.3.

WP Membership 1.0.5 premium

I have found that the membership plugin is not reliably restricting and allowing access data.. I have users that have the exact same subscriptions and levels who are receiving different results from within their logins.

Deleting / recreating accounts sometimes helps, sometimes not. It has been very difficult to establish a pattern.

I’ve checked out the database entries which are identical and have even copied permissions from one user to another, and am still getting inconsistent results.

I’m wondering if the way my various levels are interacting is causing the randomness I am seeing.

Any thoughts or help would be greatly appreciated – this is a live site that has many active members and this is an ongoing issue I need to get cleared up ASAP.