No offense AWA but I don't think this is a browser problem. These are issues that seem to get worse on busy days. The entire AdWords site has been running extremely slow. Surely people at Google are aware of this.
No offense taken! You are right Robino, this is not a browser issue - although browser settings can compound the problem (or perhaps more correctly, create problems of their own).
In any case, yes, people at Google are aware of the issue, and are hard at work on it. I know it is frustrating, and appreciate your patience. Our apologies.
AWA
At the risk of being too early again, word has it that this should be much improved by now - and better still by later tonight. (California time, BTW, where it is now 4:27 in the evening.)
So, I hope that things are smoothing out for you all.
In any case we are aware of the problem, and are working on it as a priority.
AWA