weird data corruption

Hi,

I'm seeing some odd data corruption in a log file. Below, the second
line should be a SQL query (prefixed by a timestamp). It's turned into
garbage, but apparently not just random bytes. I'm using HSQL - that's
the only external library, and it uses FFI, so there might be some bad
memory management, but I thought I should ask if other people have
seen something similar. It's the second time this has happened to me.

----------------------------------------------------------------
# fillUpQueue
8-22010 62-20:83-12:12 62:2 :e3x1e:c2u6t:i nqgu e(rdyeilnegt e( sferloemc tp 
fccoqu_nstt(u*d)y _fqruoemu ep fwchqe_rset usdqy__uqsueeru e=  w2h)e
re sq_user = 2)
2006-08-21 22:31:27:   duration: 843.8 msec
# addToQueue
# getNewCards
# getVT
2006-08-21 22:31:27: querying (select max(res_num) from pfcq_study_results 
where res_user = 2)
2006-08-21 22:31:27:   duration: 152.6 msec
----------------------------------------------------------------

Regards,

Frederik

-- 
http://ofb.net/~frederik/