Is there an easy way to determine a possible cause (like what specification) for a high logcount?

We replaced one of our old (2 mirrored) fileservers with a new windows storage server 2008. Initial sync with the old machine worked fine. The final incremental sync seems to have _not_ finished this morning since I'm now looking at a climbing kernel log count which was a rare event with our old machine (with 768MB kernel cache, new machine has 3GB kernel cache).

I suspect that one of the specifications is causing this but I wonder if there is an easy way to determine what is causing the backlog (was around 200 when I looked this morning, now we're at 835, have seen it at 900+ this afternoon). It is sending/receiving in excess of 30MBytes/sec at times which we consider 'normal' for the old machine but there must be something that is keeping this logcount high.

Short description of our setup: 2 hosts with around 9 specifications (all use circular mirroring, reflect protection is checked on ALL specifications, just verified that). Old host is a 4GB windows 2003 machine (32bits, replistor 6.2.1.3), new host is a 12GB windows storage server 2008 machine (64 bits OS&Replistor 6.4.0.34).