Like the earlier LOS poster, I had almost an identical experience last week. I raved to the wife about LOS on the L.A. to Vegas trek, so we both had pretty high expectations. As a background, we have both eaten primarily Asian food (Chinese, Thai, Vietnamese, Japanese mostly) all our lives in the SoCal area and are at least knowledgeable of what's good vs. great etc. IMHO, LOS was just OK.
We went with three items that seem to be popular to Chowhounds: the sour sausage rice app., a chicken soup on the Northern menu, and the catfish with the chili sauce. The sausage rice was pretty bad. Way way too salty. At first, I told myself it was the sourness and I wasn't used to it. After awhile, I got extremely thirsty which told me it was due to the high salt content. The soup was good, but nothing I couldn't find elsewhere. OK, waited with anticipation for the catfish. It looked impressive, but the meat was relatively bland, somewhat dry (to me), and the spicing didn't seem that special.
I don't know, the difference between what I've read and what I experienced was so diametrically opposite, it makes me wonder. Perhaps LOS has gone downhill (hopefully temporarily)? Luckily, I redeemed myself at Commander's the next day. Their pecan-crusted catfish, now THAT's a fish dish to rave about.