Can I truncate statements in the log?

[Howard Cole <howardnews@xxxxxxxxxxxxx>]

As part of my log configuration, I log statements that take over 3 
seconds. I find this very useful for optimising tables etc. The problem 
is that it produces verbatim some very large statements which can create 
huge log entries, which are probably responsible themselves for slowing 
the system down. The problem tend to be insert statements for binary 
objects - which can be Megabytes long.

Is it possible to stop logging these excessive insert statements 
somehow, or restricting the log of statements to select, delete etc and 
ignore inserts.

Thanks.

Howard.