Errors

I'm getting the following errors in my log from a simple procmail:

procmail: [10797] Thu Jan  9 04:20:54 1997
procmail: Locking "/var/mail/tedder.lock"
procmail: Error while writing to "/var/mail/_ie2Ge-zone.e-"

and this one:

procmail: Lock failure on "/var/mail/tedder.lock" 

Why?
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If you only have a nail, you tend to see every hammer as a problem.
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