I have had the same problem (see PMR 90102 IX85111).
This PTF is only for NV4.1, nothing available for NV5.1.
Additional NV5.1-nvcorrd cores every time you stop netview.
Please contact support.
W.Klein

>
> Hi again,
>      I have been having this problem for a while , I reverted back to
> running the rulset from the workspace but it isn't a good long term
> solution.
> My main ruleset is being run from ESE.automation, it works fine except that
> after a couple of days, the rules simply stop being triggered and I have no
> idea why.
>
> When I stop and start Netview, the ruleset starts running again.
>
> Has anyone seen this before ??
>
> Mark
>