I was using DDSG plugin, it works flawlessly. After sometime (few months), WP suddenly died. It tooks few days before i figure out what was going on. When i check wp_options table, it contains thousands of records and 99% of them are started with ddsg_ . This plugin keep writing new records into the table until your server can't handle them (time out, since wp loop thru all records in the table wp_options).
I hope dagon can fix it soon. for you guys out there who are using this plugin, pls check your wp_options records.