That would mean 2 templates are uncached, which isn't too bad actually but they are normal templates so they should really be cached. It'd be a case of enabling/disabling mods to find out if any of them are causing it.
Other than that I see vB Optimise is doing its job fine and the cache is being pulled successfully. If you can I recommend using the vB Optimise options with vB Advanced which you seem to use to further reduce queries, see the top post for more information on that