I activated a Droid on Verizon last week. It is rooted and has a fresh install of CyanogenMod 220.127.116.11. with barely anything else installed. I only put a handful of apps on it, none of which I'd think would account for the kind of extreme data use I'm seeing (Google Voice, Mobile Defense, Apps Organizer, SetCPU, etc). Here's the data usage from day 1 (6/5), according to Verizon's website: 8:53am - 446 KB 9:47am - 921 KB 1:57pm - 180 KB 3:28pm - 799 KB 5:37pm - 569,645 KB 7:40pm - 988 KB 9:59pm - 356 KB Yeah, so at 5:37, I supposedly used 569 MEGAbytes of data. I don't think I even used the phone at all around that time, much less for something gigantic. The following four days all show similar usage patterns. Several small uses (which are probably when I was actually using the phone), with one or two big chunks of data. The big chunks look like this: 6/6 at 5:00pm - 441,645 KB 6/7 at 4:55pm - 98,611 KB 6/8 at 7:39am - 200,243 KB 6/8 at 5:05pm - 23,421 KB 6/9 at 2:02am - 60,331 KB I have not used YouTube, Pandora, Navigation, or anything media-intensive like that. I do have Wireless Tether and Barnacle installed, but I have only tethered sparingly (a couple MBs or less each time) and am sure to disconnect when I'm done. Some days I have not tethered at all and yet the extreme usage chunks have happened every day. Any ideas what might be going on here? Even wild guesses are welcome. Thanks!!