it's not uncommon for this to happen, especially with new DLC content/patches.
Remember Dragon Age Origins: Return to Ostagar that caused major issues so they had to pull it for a while (still not on PS3 *anger*)
and of course my favorite bugbear Bethesda with their Fallout 3 DLC that also had to be pulled.
Also, i recall Sony themselves releasing quick firmware patches for buggy firmware releases.
not uncommon but bloody frustrating.
Personally, I'd not install the HR patches until next month just so Quantic can unscramble their eggs a bit.
EDIT: it's the "fix it later" attitude I find so annoying. It's unfortunately a symptom of our modern internet enabled age, I'm afraid.
Proud Sony Rear Admiral