Comment 3 for bug 1337281

I experienced this myself but it seems to be all outbound NAT traffic.
I set grub to boot and older kernel and everything went back to normal.
From a workstation behind the firewall, do a speed test at speakeasy.net and notice that the download speeds are really not affected but when it goes to test your upload it can't even complete the test. My kernel version was 3.2.0-65.
I hope they fix this soon - it has caused a lot of problems for me and my customers.