I think your problems might really be with Verizon towers and not the phone.Yep, on 5.7.893 I had to airplane mode cycle upwards of six times a day, on 5.9.901 I have to cycle about once every other day.
-BUT-
I just had a chance to test my patience almost immediately after my last post. Lost my data connection entirely while just sitting here at my computer.
Waited.
Little longer.
Not yet!
BAM 4g is back WITHOUT an airplane mode cycle!
So I guess I'm still having connectivity problems, but 5.9.901 can more or less handle them by itself... still a little aggravating that it drops data at all, though...