Since 4am today we've been getting tons of

Aug 29 17:25:57 hostingXX kernel: Mem-info:
Aug 29 17:25:57 hostingXX kernel: Zone:DMA freepages: 2913 min: 0 low: 0 high: 0
Aug 29 17:25:57 hostingXX kernel: Zone:Normal freepages: 1247 min: 1278 low: 4543 high: 6303
Aug 29 17:25:57 hostingXX kernel: Zone:HighMem freepages:186042 min: 255 low: 4606 high: 6909
Aug 29 17:25:57 hostingXX kernel: Free pages: 190203 (186042 HighMem)
Aug 29 17:25:57 hostingXX kernel: ( Active: 105821/2710, inactive_laundry: 538, inactive_clean: 458, free: 190203 )
Aug 29 17:25:57 hostingXX kernel: aa:0 ac:0 id:0 il:0 ic:0 fr:2913
Aug 29 17:25:57 hostingXX kernel: aa:0 ac:3834 id:0 il:217 ic:0 fr:1247
Aug 29 17:25:57 hostingXX kernel: aa:13635 ac:88353 id:2656 il:375 ic:458 fr:186042
Aug 29 17:25:57 hostingXX kernel: 3*4kB 1*8kB 3*16kB 2*32kB 2*64kB 1*128kB 2*256kB 1*512kB 0*1024kB 1*2048kB 2*4096kB = 11652kB)
Aug 29 17:25:57 hostingXX kernel: 293*4kB 1*8kB 14*16kB 4*32kB 10*64kB 0*128kB 1*256kB 1*512kB 0*1024kB 1*2048kB 0*4096kB = 4988kB)
Aug 29 17:25:57 hostingXX kernel: 694*4kB 394*8kB 60*16kB 36*32kB 1730*64kB 2198*128kB 942*256kB 179*512kB 11*1024kB 0*2048kB 0*4096kB = 744168kB)
Aug 29 17:25:57 hostingXX kernel: Swap cache: add 1004590, delete 997303, find 8870724/9006701, race 6+124
Aug 29 17:25:57 hostingXX kernel: 208570 pages of slabcache
Aug 29 17:25:57 hostingXX kernel: 230 pages of kernel stacks
Aug 29 17:25:57 hostingXX kernel: 0 lowmem pagetables, 1338 highmem pagetables
Aug 29 17:25:57 hostingXX kernel: Free swap: 1968480kB
Aug 29 17:25:57 hostingXX kernel: 524272 pages of RAM
Aug 29 17:25:57 hostingXX kernel: 294896 pages of HIGHMEM
Aug 29 17:25:57 hostingXX kernel: 10408 reserved pages
Aug 29 17:25:57 hostingXX kernel: 43784 pages shared
Aug 29 17:25:57 hostingXX kernel: 7298 pages swap cached
Aug 29 17:25:57 hostingXX kernel: Out of Memory: Killed process 9614 (httpd).
Aug 29 17:25:57 hostingXX kernel: Out of Memory: Killed process 9614 (httpd).
Aug 29 17:25:58 hostingXX kernel: Fixed up OOM kill of mm-less task

Load is under 0.5, connections are under 100 -- very low traffic. We've made no config changes and the server has been fine for 60 days. When the first Out of Memory warnings hit in /var/log/messages, named is also down and needs to be restarted. We put in a TT and a memtest was run, but they said memory was fine.

Any other ideas? Suggestions? Anyone else see a similar issue?