Web to Lead: CRM Timeout

While testing my web-to-lead form I received a Zoho CRM message that my session had timed out. I logged in again and checked the new Lead, but discovered that the only field populated was the Name field with "No name provided" or something similar.

Interestingly enough, from the user's point of view, the form appeared to have processed the data. Obvioulsy, I'm concerned that 1) I need to be logged in to receive the user and 2) this may go unnoticed from my end once I go live.

Any idea what's happening?