I'm experiencing an issue where, occasionally, POST data is not being received. We've used tools to view the requests being sent and all the data is there, and the same request will run successfully 9 out of 10 times.
I have not found any errors in the logs, have double checked permissions on the tmp folder, definitely not running out of memory, have increased post_max_size, and now am clutching at straws to try and find the problem.
Has anyone experienced anything similar and can give me some clues or point me in a direction that might show the root of the problem?