I have similar problems regarding bait and switch on the ticket price after I enter in credit information and click on the final purchase price. Happens very often, especially when using the multi-city search or search by schedule.

Secondly, the last few days after an initial search on the website I lose the option to choose one way fares or multicity, only RT air fare searches are enabled (I see now jrl767's post about this). This happens in all browsers I have tried and is persistent, I have to wait a few hours before I can again do my one-time open jaw or multi-city or one-way search. This issue does not affect award ticket searches, only revenue ticket searches.

Lastly, I have a ticketed itinerary where the AMS-DTW leg has completely disappeared (a Delta metal flight) and the website gives me a message that I have 14 hours to make my way on my own from Amsterdam to catch my flight in Detroit, I"m not sure that I can run and swim that fast. I'll call tomorrow and see what's up with this.