Forum Moderators: buckworks
Maybe your merchant account has been sketching out and preventing order completion. Maybe the fancy image javascript window you made is causing errors. Maybe a db table is whacky/broken. Could be so many things...
But be absolutely sure you actually have a problem first. Did you have a similar downturn this time last year?
Did you loose a traffic source that may have been converting at 15% causing your over all to go from 3% to 2%?
Sorry - without more details you just generate more questions than answers.
HTH