Did you (or previous owner) in the distant past replace your fuel pump with an older one from a junkyard?
The reason I ask is that a classic symptom of the recalled fuel pump in the early model Focii was just that - stalling at stoplights with quarter tank or less of fuel. It probably happened to me a half dozen times before the problem was correctly diagnosed.
The recall only affected vehicles mfg'd through the end of 2001 (mfg date, not model year), so your '03 wouldn't have wound up with a defective pump unless it received one from a junkyard or old inventory.
"I'm jealous of girls because they get to wear dresses." (Todd Flanders)