[Dovecot] 1.0alpha1: corrupted cache file complaints?

Hi,

I have seen the following in my syslogs for 1.0alpha1:

Corrupted index cache file [filename]: record points outside file and : indexid changed : record list is circular : Cache record offset 9772 points outside file : invalid record size

Are these errors minor? Major? Self-healing? Should the cache files be blown away to fix these errors?

Jeff Earickson Colby College