I left my phone on standby for 9 hours the other night without using it at all. When I checked it in the morning it had dropped to 91% with 31 minutes usage. I had push disabled and mail set to fetch hourly. I ran a few more tests leaving the phone on standby for an hour and found for every hour on standby the usage was 4 minutes (even though I hadn't touched it in that time). I tried uninstalling a few programmes like sbsettings but it made no difference. I restored to stock 4.0.1, set up as a new phone and ran the same test again (left the phhone on stanbdy for an hour) this time I found no usage at all. As soon as I ran jailbreakme and installed cydia the phantom usage came back. I haven't even installed any packages yet, not even openssh. Has anyone else noticed this? It seems to be draining my battery quite bad. Sorry for the essay.