My site continues to be hacked after upgrading to wordpress 3.4.1. I have gone through extensive hours of trying to figure out how hackers are getting through and infecting my website with malware. I have installed clean versions of wordpress, rebuild databases, uninstalled all plugins, installed clean wordpress templates-- and they are still getting through. I've paid my webhost hours upon hours of fees to try and determine what is going on, and we've come to the realization that there is some kind of vulnerability in wordpress itself. I'm not sure if this is a known issue or if anyone else is experiencing this problem?