If you put the cursor at the beginning of the section of text you wish to copy, just hold the "Shift" key, will pressing the right directional key, to highlight the selection. Once you have the selection, pres Ctrl+C to copy, Ctrl+V to paste. No issues copying and pasting for me.

I just shorted the backlight on my 900's screen (sink ) and I'm looking at alternatives that support Sling. Wanting a hard keyboard/slider, and not being a fan of iPhone, I don't see anything really compelling that will support AT&T 3G (I'd get a Torch but want a bigger screen). I'll probably just hold for a Milestone 2 or pick up the Verizon Droid 2/Pro if it supports AT&T's 3G with its "World Roaming" capability.