Rails - Jul 2006 - Lost connection to MySQL server during query (Mysql::Error)

Hi,

I have a class that processes a call data record file and writes the 
data to mysql.

There are multiple files to process.  A list of files to process of read 
from the data directory
and each one is processed in turn.

I want to run them as threads but when I change the class to run as a 
thread and then call join
on all the threads it returns this error.


/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.14.3/lib/active_record/vendor/mysql.rb:1092:in
`read'': Lost connection to MySQL server during query (Mysql::Error)
        from ./lib/cdr_processor_aapt.rb:39:in `join''
        from ./lib/cdr_processor_aapt.rb:39:in `process''
        from ./lib/cdr_processor_aapt.rb:39:in `process''
        from ./lib/process_cdr.rb:26:in `process''
        from ./lib/process_cdr.rb:17:in `process''
        from process.rb:22

After googling I still can''t find an answer.  Your help is much
appreciated.

Thanks,
Chris.