Yep, good question!
This is a great plugin, very useful, but unfortunately seems to have a few important bugs and problems that really need to be looked at. I guess like many of us WP is a hobby outside of other employment, but it would be a shame to lose the big user-base you have built up so far!
The main issues I am having are:-
– Whitelist this variable link in warning emails doesn’t work (as described here: http://wordpress.org/support/topic/plugin-wordpress-firewall2-how-to-whitelist-a-parameter-on-a-page?replies=6
– Errors on saving any parameters or settings in the admin panel, as described here: http://wordpress.org/support/topic/plugin-wordpress-firewall-2-warning-after-setting-whitelisted-ips?replies=18
Could you please look into these as soon as you get chance, as unfortunately I’ve just had to deactivate the plugin for now :'(
Thanks, James