Question : Backup Data Transfer causes NIC messages?

We're getting pretty much a "continuous flood" of the informational message below on a SUSE OpenLinux box running the CA BrightStor ArcServe 11.5 SP3 client and communicating with a Windows box running the full version of ArcServe (same version and patch level).

Anyone have any ideas on how to diagnose or fix this?  More info as requested...
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The following is only an harmless informational message.
Unless you get a _continuous_flood_ of these messages it means
everything is working fine. Allocations from irqs cannot be
perfectly reliable and the kernel is designed to handle that.
swapper: page allocation failure. order:0, mode:0x20

Call Trace:
  [] __alloc_pages+0x2d8/0x2f1
 [] cache_grow+0x137/0x343
 [] cache_alloc_refill+0x17e/0x1cc
 [] __kmalloc+0x95/0x9f
 [] __alloc_skb+0x5c/0x123
 [] __netdev_alloc_skb+0x12/0x2d
 [] :e1000:e1000_alloc_rx_buffers+0xf8/0x380
 [] :e1000:e1000_clean_rx_irq+0x506/0x540
 [] :e1000:e1000_clean+0x84/0x2c0
 [] net_rx_action+0xa4/0x1b0
 [] __do_softirq+0x5e/0xd5
 [] end_msi_irq_wo_maskbit+0x9/0x16
 [] call_softirq+0x1c/0x28
 [] do_softirq+0x2c/0x7d
 [] do_IRQ+0x6a/0x73
 [] mwait_idle+0x0/0x4a
 [] ret_from_intr+0x0/0xa
  [] mwait_idle+0x36/0x4a
 [] cpu_idle+0x95/0xb8
 [] start_kernel+0x21b/0x220
 [] _sinittext+0x28a/0x28e

Mem-info:
Node 0 DMA per-cpu:
cpu 0 hot: high 0, batch 1 used:0
cpu 0 cold: high 0, batch 1 used:0
cpu 1 hot: high 0, batch 1 used:0
cpu 1 cold: high 0, batch 1 used:0
Node 0 DMA32 per-cpu:
cpu 0 hot: high 186, batch 31 used:30
cpu 0 cold: high 62, batch 15 used:51
cpu 1 hot: high 186, batch 31 used:20
cpu 1 cold: high 62, batch 15 used:10
Node 0 Normal per-cpu: empty
Node 0 HighMem per-cpu: empty
Free pages:        3804kB (0kB HighMem)
Active:195589 inactive:295150 dirty:57148 writeback:1 unstable:0 free:951 slab:18829 mapped:4486 pagetables:524
Node 0 DMA free:1756kB min:32kB low:40kB high:48kB active:0kB inactive:0kB present:11572kB pages_scanned:0 all_unreclaimable? yes
lowmem_reserve[]: 0 2000 2000 2000
Node 0 DMA32 free:2048kB min:5704kB low:7128kB high:8556kB active:782356kB inactive:1180600kB present:2048920kB pages_scanned:0 all_unreclaimable? no
lowmem_reserve[]: 0 0 0 0
Node 0 Normal free:0kB min:0kB low:0kB high:0kB active:0kB inactive:0kB present:0kB pages_scanned:0 all_unreclaimable? no
lowmem_reserve[]: 0 0 0 0
Node 0 HighMem free:0kB min:128kB low:128kB high:128kB active:0kB inactive:0kB present:0kB pages_scanned:0 all_unreclaimable? no
lowmem_reserve[]: 0 0 0 0
Node 0 DMA: 3*4kB 4*8kB 3*16kB 2*32kB 1*64kB 2*128kB 1*256kB 0*512kB 1*1024kB 0*2048kB 0*4096kB = 1756kB
Node 0 DMA32: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB 0*4096kB = 2048kB
Node 0 Normal: empty
Node 0 HighMem: empty
Swap cache: add 31, delete 31, find 0/0, race 0+0
Free swap  = 4008056kB
Total swap = 4008176kB
Free swap:       4008056kB
524032 pages of RAM
9707 reserved pages
398871 pages shared
0 pages swap cached
The following is only an harmless informational message.
Unless you get a _continuous_flood_ of these messages it means
everything is working fine. Allocations from irqs cannot be
perfectly reliable and the kernel is designed to handle that.
klogd: page allocation failure. order:0, mode:0x20

Call Trace:
  [] __alloc_pages+0x2d8/0x2f1
 [] cache_grow+0x137/0x343
 [] cache_alloc_refill+0x17e/0x1cc
 [] __kmalloc+0x95/0x9f
 [] __alloc_skb+0x5c/0x123
 [] __netdev_alloc_skb+0x12/0x2d
 [] :e1000:e1000_alloc_rx_buffers+0xf8/0x380
 [] :e1000:e1000_clean_rx_irq+0x4a5/0x540
 [] :e1000:e1000_clean+0x84/0x2c0
 [] net_rx_action+0xa4/0x1b0
 [] __do_softirq+0x5e/0xd5
 [] end_msi_irq_wo_maskbit+0x9/0x16
 [] call_softirq+0x1c/0x28
 [] do_softirq+0x2c/0x7d
 [] do_IRQ+0x6a/0x73
 [] ret_from_intr+0x0/0xa
  [] do_syslog+0x173/0x3be
 [] do_syslog+0x18a/0x3be
 [] autoremove_wake_function+0x0/0x2e
 [] kmsg_read+0x3a/0x44
 [] vfs_read+0xcb/0x171
 [] sys_read+0x45/0x6e
 [] system_call+0x7e/0x83

Mem-info:
Node 0 DMA per-cpu:
cpu 0 hot: high 0, batch 1 used:0
cpu 0 cold: high 0, batch 1 used:0
cpu 1 hot: high 0, batch 1 used:0
cpu 1 cold: high 0, batch 1 used:0
Node 0 DMA32 per-cpu:
cpu 0 hot: high 186, batch 31 used:30
cpu 0 cold: high 62, batch 15 used:51
cpu 1 hot: high 186, batch 31 used:20
cpu 1 cold: high 62, batch 15 used:10
Node 0 Normal per-cpu: empty
Node 0 HighMem per-cpu: empty
Free pages:        3804kB (0kB HighMem)
Active:195589 inactive:295150 dirty:57148 writeback:1 unstable:0 free:951 slab:18829 mapped:4486 pagetables:524
Node 0 DMA free:1756kB min:32kB low:40kB high:48kB active:0kB inactive:0kB present:11572kB pages_scanned:0 all_unreclaimable? yes
lowmem_reserve[]: 0 2000 2000 2000
Node 0 DMA32 free:2048kB min:5704kB low:7128kB high:8556kB active:782356kB inactive:1180600kB present:2048920kB pages_scanned:0 all_unreclaimable? no
lowmem_reserve[]: 0 0 0 0
Node 0 Normal free:0kB min:0kB low:0kB high:0kB active:0kB inactive:0kB present:0kB pages_scanned:0 all_unreclaimable? no
lowmem_reserve[]: 0 0 0 0
Node 0 HighMem free:0kB min:128kB low:128kB high:128kB active:0kB inactive:0kB present:0kB pages_scanned:0 all_unreclaimable? no
lowmem_reserve[]: 0 0 0 0
Node 0 DMA: 3*4kB 4*8kB 3*16kB 2*32kB 1*64kB 2*128kB 1*256kB 0*512kB 1*1024kB 0*2048kB 0*4096kB = 1756kB
Node 0 DMA32: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB 0*4096kB = 2048kB
Node 0 Normal: empty
Node 0 HighMem: empty
Swap cache: add 31, delete 31, find 0/0, race 0+0
Free swap  = 4008056kB
Total swap = 4008176kB
Free swap:       4008056kB
524032 pages of RAM
9707 reserved pages
398871 pages shared
0 pages swap cached

Answer : Backup Data Transfer causes NIC messages?

You either have too few memory (and it cannot allocate large buffers), or the memory is broken.
To check memory http://www.memtest.org/