MailScanner consuming 100% CPU

[--[ UxBoD ]--]

This evening my home server went crazy and when MS starts scanning a message it consumes 100% CPU :(

top shows :-

20692 postfix   25   0  234m  67m 3968 R 99.7  2.2   3:20.57 MailScanner  

if I run a message through using MS --debug it goes through SA fine :-

[20692] dbg: shortcircuit: s/c ham due to SC_HAM, using score of -100
[20692] dbg: check: is spam? score=-20.001 required=5
[20692] dbg: check: tests=NO_RELAYS,SC_HAM
[20692] dbg: check: subtests=
[20692] dbg: plugin: Mail::SpamAssassin::Plugin::Shortcircuit=HASH(0x6d2be20) implements 'compile_now_finish', priority 0
max message size is '30k'

then it just hangs.  I have set Virus Scanners = none but it still does the same.  If I try and attach using strace nothing ever shows.  Any ideas I am really stuck :(


Regards,

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