Possible spoiler
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I am in Ust Natha(drow city in underdark) and I have done the "save the daughter from mindflayers" and then I returned and talked to Phaere and she said to meet her within two days for a new quest. I just wanted to get started on the next part so I just ran around the city for a couple of hours and then went to the Inn to rest. I talked to one of the drow (the old one with the grass house story) and after I talked to him all of the drow turned red and started attacking. I killed them all, but ended up reloading....this time I just went straight to the innkeeper, but when I talk to him everyone turns red AGAIN and attacks.....PLEASE HELP......WHY DO THEY KEEP ATTACKING....IS THERE SOMETHING I NEED TO DO BEFORE GOING BACK TO THE INN?????
Thanks

The only thing I can think of is that you missed the deadline.

Once I spent too much time looking around the city and everyone turned red. In my case though, Phaere teleported in and told me that I had wasted too much time and that I was, "discovered Surface-Dweller!" Then she turned red and attacked.

Try running straight to Phaere rather than talk with the inkeeper. See if that works.

The Timeline seems to be the obvious answer here. Do you have any earlier saves? A quicksave or anything that you can go back to?
The timeline had me on a tight cushion whilst in the usta nastaadfdfasa(damn word that eh?)

If this doesn´t work you´ll just have to butcher your way on to the egss and get out!