CUPS Slowness due to network issue

[Paul Conklin]

I know this is totaly an issue on my network, I'm just hoping someone can point me in the right direction.  using CUPS 1.6.2 on CentOS 5.9 (happens with 1.6.1 as well) and if i'm just on a network (think Linksys Router) everything hums right along.  I'm trying to do some testing in a larger scale network, so I have a W2k3 machine that all did was the "first server setup" so that installed DHCP, DNS, and AD.  When I do so much as just browse the web page, it is painfully slow and completely hangs cupsd (even lpstat -o hangs), then after about 30 seconds or so, everything comes back.  I did an strace and it hangs at this point.  (right after the 5000).  Anyone have any thoughts?

getsockname(15, {sa_family=AF_INET, sin_port=htons(631), sin_addr=inet_addr("192.168.1.14")}, [47854525612048]) = 0
open("/etc/hosts", O_RDONLY)            = 16
fcntl(16, F_GETFD)                      = 0
fcntl(16, F_SETFD, FD_CLOEXEC)          = 0
fstat(16, {st_mode=S_IFREG|0644, st_size=186, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2b8664b3f000
read(16, "# Do not remove the following li"..., 4096) = 186
read(16, "", 4096)                      = 0
close(16)                               = 0
munmap(0x2b8664b3f000, 4096)            = 0
socket(PF_INET, SOCK_DGRAM, IPPROTO_IP) = 16
connect(16, {sa_family=AF_INET, sin_port=htons(53), sin_addr=inet_addr("192.168.1.1")}, 28) = 0
fcntl(16, F_GETFL)                      = 0x2 (flags O_RDWR)
fcntl(16, F_SETFL, O_RDWR|O_NONBLOCK)   = 0
poll([{fd=16, events=POLLOUT}], 1, 0)   = 1 ([{fd=16, revents=POLLOUT}])
sendto(16, "A\244\1\0\0\1\0\0\0\0\0\0\00214\0011\003168\003192\7in-add"..., 43, MSG_NOSIGNAL, NULL, 0) = 43
poll([{fd=16, events=POLLIN}], 1, 5000) = 0 (Timeout)
poll([{fd=16, events=POLLOUT}], 1, 0)   = 1 ([{fd=16, revents=POLLOUT}])
sendto(16, "A\244\1\0\0\1\0\0\0\0\0\0\00214\0011\003168\003192\7in-add"..., 43, MSG_NOSIGNAL, NULL, 0) = 43
poll([{fd=16, events=POLLIN}], 1, 5000 <unfinished ...>