OES2Sp1.. by running the "top" command, I can see that namcd is taking up 27% of memory, and growing by the hour.. this morning it was around 20%. Whats the deal?

I had to reboot this server the other day because it was slowing down to a crawl..and it took FOREVER to flush the cache , which I believe is namcd's deal..

Thanks in advance.. total linux noob