I had problems in DR also... but mostly it was because my screen was so dark in some places that I simply could not see at all.  I could see other people because they had just enough color brightness to make out.. but the rest of it was pitch black in some very dangerous places.   The only way I finally made it out was to inquire of help.  After this a very kind and patient soul helped me feel my way out.  (which took quite a while since I was nearly blind in there  and died twice to falling even with help).

What I wish is that there was some kind of gamma adjustment available in game....  at least to some degree...   

I now wish NEVER to die again.  As DR exists.. it is simply not a place I can hope to navigate (since I can't see).

Another suggestion is to place the darkest spots in areas that are less dangerous and provide a pinch more lighting in the most dangerous ones.  This way new folks have hope to get out by using common sense alone. 

I would hate to pester my fellow players at every death to be my "Seeing Eye Dog"  LoL

PS - I have a nice flat pannel monitor on which I have played MANY intense MMORPGS  (EQ,  EQ2.. etc... etc...)  This is the only one I have had any difficulty with darkness.