I am running Solspace FreeForm 4.2.2 and I have a form that submits via Ajax and has a file upload in the form. Sporadically we are seeing that the form gets saved in the database but the file does not saved. So user are trying to upload the file multiple times and it fails everytime. We are seeing 3 to 10 records in the database for the users depending on how determined they are, none of which have a file saved with it. Most of the time it works just fine for other users. We can't find a pattern of file size, file type, OS or browser used. Internally we cannot replicate the issue but see this happen several times a day.
Anyone experience anything like this? Have any ideas what to try to try and track down / replicate the problem?