In order to limit the size of the uploaded logfile, you can edit the client-local.cfg file.
Use a text string or regular expression to exclude these lines from the uploaded log file.
Remark: You can only filter on the text (value=) of an error.
In local mode: edit the BBwin file
<msgs>
<match logfile="System">
<ignore logfile="System"...
2009-06-10 19:31:20 UTC in bbwin