Someone referred to an on-line visa which was probably a reference to the E-Visa system that, it appears from the attached, is being tested in three countries (this from the Thai Embassy in Paris). The London site has some useful information here - [[members only]).
May explain why Thai Consulates around the world are all doing something different as they await the result of the trials.
I also hear that 2nd applications for O-A visas are being subjected to a further requirement for Retirement ie. 800k in a Thai Bank.
Looks to me as though Thailand in the future will only want ex-pat retirees if they have made an investment in cash.