Ok...My 09 with 2500 miles seems to be running hotter than normal. Last summer it seemed ok but a little hot.... but now it seems hotter. I just got back from a short ride of about 8 miles..it is 80 degrees and i just rode about 55mph. I could feel a lot of heat around my legs and when i turned on my street the fan was running. My hearing is not so good so I couldn't tell if it was running while crusing. Seems odd that it is running when I'm only going about 25mph.
Is your temp light illuminating when the bike seems to run hot? My 09LT only has 1500 miles on it, so it's probably not broken in yet either - even though I ride it like a rental bike...
I cannot usually hear my fan running while riding over the ticks, rattles, and whines that entertain me on the road, but it always kicks in when I slow down for a light, brake for a cell phone queen, etc...
I expect that, since our motor is air and liquid cooled, that the radiator fan will kick in more when the bike is at lower speeds - or stopped. The VN900 has large air cooling fins for a motor its size - this is probably both for looks and cooling.
If your light IS illuminating - that's a different problem and I'd IMMEDIATELY check things like coolant levels, radiator blockages, water pump operation, etc...I had a buddy that put some big gawdy chrome cover on his radiator, and he almost worked his poor radiator fan to death!
Short answer: If the temp light isn't illuminated, I wouldn't worry about it much. Modern bikes like our VN900(* cough!), are made to "run warm" for emmissions...I guess.