Bind 9.2.3 exiting due to assertion failure.

[Jobber]

Hi,
We see this on an almost daily basis, Has anyone seen this before ?

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Dec  5 11:51:00 ns named[12802]: name.c:349: REQUIRE((((name) != 0) &&
(((const isc__magic_t *)(name))->magic == ((('D') << 24 | ('N
') << 16 | ('S') << 8 | ('n')))))) failed
Dec  5 11:51:00 ns named[12802]: exiting (due to assertion failure)
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We are running 
version.bind.           0       CH      TXT     "9.2.3"

Regards
Jobber