My host updated from 5.3 to 5.4.20 and after that doing password resets seems to cause some sort of connection reset or multiple requests. I tested this again on another one of their servers that was still on 5.3 was working fine until they upgraded that server to 5.4 and once again screwed it up. With a limit on password resets submitting a reset will show the message you have to wait X seconds and the email was sent successfully as if it had been submitted more than once. Clicking on the link would say that there was an error resetting the password but the email comes through just like it had been submitted twice, all other known problems with that half are not related. However disabling the timeout on resets was a little more telling. The password reset would show in firefox as a connection reset or in chrome as the server not returning anything.
I reluctantly jumped over to xfhost (which is running 5.4.17) which nice to see it working now and do not have this problem. Performance figures are ringing out the same as my current host but I am trying to convince them its their setup and not Xenforo and 5.4.
Has anyone run into anything similar, might know what the cause is? Seen many complaints on other software when upgrading to 5.4 of connection resets and disabling a particular module, etc was the fix for the individual case.