Nim Thread Blocked On "hostname"

hello

i'm running on two P570 aix 5.3 8 cpus 48 Gram hacmp 5.4 ver
and i got this massage on my errpt : nim thread blocked "hostname"
any one got this masaage?
what i can do ?
i can leave with this massage?

best regards

ariec

NIM with HACMP means Network Interface Module. You have a problem with your cluster's topology. Make sure your service and your heartbeat networks do all work properly.

hello

can some one give me some tips about what to check on topology of my cluster that can be the cause to those massages.

best regards

ariec