If it makes you feel any better, the 360 version is also abyslam. The lag problem isnt exclusive to p23, many quests are just broken.
Its a poor product overall, and I havent checked the recent patch, but I think 2 months on. Its a tad late.
I know, but the PS3 does get the brunt of the negative effects including an inherently inferior framerate before the memory-related "lag" issue (just check any lensoftruth or DigitalFoundry comparison... the PS3 version averages, overall, somewhere in the low to mid 20s on fps, which I swear to you from personal experience trying to play through all different types of regions and cells in Skyrim, and even if the 360 version has screen-tearing, I consider that much better than this choppy slugfest I have), inferior graphical fidelity, and more severely common memory complications and the like. In any case, Bethesda simply don't seem to be too good on quality control or even programming in general and all platforms are suffering the broken quests and scripting errors, usually, as well as issues stemming from a base lack of quality coding, but at least the 360 version can maintain a relatively stable framerate that for the most part stays at or near 30.
In any case, Bethesda's PR department is also quite poor, I'd say, and I don't trust them with technical matters, in general... I just fear them greater when they clearly designate a sole development platform and attempt to take the cheap route with hasty ports... of a game that, even on the platform it was designed for, has issues. I respect Bethesda's artists, I respect the sound designers, and I respect the world-builders, but I don't know if I should blame the coders, the publishers, and/or the PR department, but this company really isn't that great with fan relations or care, as far I can see, regardless of platform... it's just worse for some platforms than others. They've got the money to get the job done properly (Anybody see Skyrim's sales? They're a big-shot mainstream company with a pretty wide fanbase, now), but they just don't seem to care enough to do it and then they hide beneath a veil of silence and complete distance/lies (not hype with a bit of fabrication, just purely fraudulent lies and deception in the case of Skyrim's technical quality... a breach of implied warranty, I'd argue, as well). I'm not sure what screams selling out further than having a best-selling game... and still screwing over your fanbase on base performance optimization.