Discarding old VCL

[Michael Lenaghan]

>>Any idea where that ref count is coming from?
>
> Some worker thread, which must be stuck somewhere.
>
> What is the oldest non-zero refcount you have seen ?

Hello.

It looks like the ref counts do clear eventually--but it can take
several days. On 6/26, for example, there was a config from 6/22 that
still had a ref count of 1. By 6/27 it dropped to zero. As of today,
6/28, the oldest config is from 6/25. So perhaps it's strange--or at
the very least unexpected--but not really a problem.

Michael.