Go to jira.freeswitch.org and sign up for an account. You can open an issue, assign it to yourself, and then submit a patch. Be sure to upload .txt files and not tar, gz, or bz2! Also, check out the bug reporting tips on this page:
http://wiki.freeswitch.org/wiki/Reporting_Bugs
It gives some more details on reporting bugs and the things that you should be doing.
-MC