Screams tended to crack around the lower seatube / bottom bracket weld area as they were too rigid!
if you like Banshee, try the spiritual successor to the scream, their new "Scythe" its about 2lb lighter yet stronger and tougher due to much better quality engineering and manufacturing, all the new Banshee's are designed with a degree of "flexure" in the front tubeset to prevent weld cracking in high impact
"strength through flexure" is a concept that any competent engineer could explain