"Sleep Mode Disabled" keeps popping up topic

For some reason when I unlock my device at the bottom of the screen I see "Sleep Mode Disabled". what does this mean?

Battery Drain Problem. No Deep Sleep topic

Hello,

I have Sony Ericsson Xperia Mini Pro (SK17i). For last three months I am experiencing battery drain issue (Batter drain within 5 to 6 hrs even if it is continuous a sleep).

So I upgraded from ginger bread to ICS. But problem still remains.
Have checked BBS, my cell never goes into deep sleep. Have checked wakeup locks and found nothing that drain much of battery power (BTW my cell is rooted).

Yesterday I tried to plugin headphones (unplugged it after 3 o 4 sec) and to my surprise after that my cell goes into deep sleep. But after I restarted my cell, same problem arises again. I cleaned stereo jack with WD-40 and plugged in headphone and my cell goes into deep sleep but after restart problem occurs again.

Do anyone faces this issue? What seems to be the problem?

Thanx

do you guys leave your g3 charging while you sleep. topic

I always been afraid to leave my g3 charging during the night. But is it true that it damages your battery. :confused:
Should I start to leaving my phone charging during I sleep without worries?