Just purchased Dell Precision laptop and a D5000 wireless dock to port to a large external monitor. Everything works great except that Firefox took about 15 seconds to load in this configuration. Interestingly, I discovered that Firefox loads instantly when I do not use the dock and just use the laptop screen. I tried all the usual suggestions to make it load faster through the dock (e.g., disable all Firefox plugins). What finally solved the problem is that In Firefox you have the option to check or uncheck use of hardware acceleration when available (go to Options, then Advanced and you will see it). It is when I unchecked this feature (i.e., turned if off) that Firefox loaded immediately.
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