Yes, they did fix this a long time ago, some time when I was leveling my warrior Pre-BC. However, when the TBC came out I was happy to find that sweeping strikes-execute worked once again. Further more, the damage was calculated incorrectly when you had buffs such as enrage and deathwish on, so that when you execute one person and crit him for 5kish, the 20% and 25% damage modifiers would carry out AGAIN on that 5k, meaning the rogue standing next to the warrior you just hit gets hit for around 10 or 11k. Sadly they fixed the damage miscalculation and execute no longer carries over, so screenshots like these are things of the past.
http://i198.photobucket.com/albums/a...doctoredss.jpg