very high buffer memory usage

very high buffer memory usage

Is this normal - I've never seen buffers so high?
$ cat /proc/meminfo
MemTotal: 16332808 kB
MemFree: 1112264 kB
Buffers: 10630124 kB
Cached: 699400 kB
SwapCached: 0 kB
Active: 3262924 kB
Inactive: 8132004 kB
Active(anon): 27464 kB
Inactive(anon): 38888 kB
Active(file): 3235460 kB
Inactive(file): 8093116 kB
Unevictable: 0 kB
Mlocked: 0 kB
SwapTotal: 525308 kB
SwapFree: 525308 kB
Dirty: 40 kB
Writeback: 0 kB
AnonPages: 65412 kB
Mapped: 11300 kB
Shmem: 940 kB
Slab: 3674368 kB
SReclaimable: 3652612 kB
SUnreclaim: 21756 kB
KernelStack: 1496 kB
PageTables: 3340 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 8691712 kB
Committed_AS: 594304 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 102232 kB
VmallocChunk: 34359634044 kB
HardwareCorrupted: 0 kB
DirectMap4k: 2048 kB
DirectMap2M: 16691200 kB