[Galaxy S I9000 Q&A, Help & Troubleshooting] sount:
Apologies for opening a new thread for this. I am unable to reply on the dev thread as I have less than 10 posts. So in reference to the following post, I'd like to contribute some experience I had in the last two weeks.

http://xdaforums.com/showthread.php?t=1627689

Across the space of two weeks, I have had a chance to note this symptom on three devices.

Device 1 SGS i9000

Rooted phone and have been on CM9 for as long as I can remember. Wake up one morning to find phone with BLN on, but no ability to wake the phone (power button, home button, volume buttons, nothing works). Popped the battery out, and the bootloop / no recovery went on forever. Had to Odin flash back to Stock 2.3.6 to start again. Since then, any CM9 (nightlies or RC2) attempted always end up in the bootloop, i.e. stock > flash rom, first boot = bootloop. I figured then if I had to go back to 2.3.6, I'd rather go to JB. First JB tried was HellyBean, and the same thing happened. It was only trying pawitp's current alpha CM10 that it worked. Days later reverted back to ICS (Paranoid Android v1.6) due to lags and bugginess.

Important to note, the CWM kernel I have gone through are 6.0.0.3, 6.0.0.8, 6.0.1.0. And Paranoid Android put me back to 5.5.0.4.

Device 2 SGSi9000

Rooted phone and have been on CM9 for as long as I can remember. Phone cut off and rebooted in the middle of a phone call and ended up in bootloop with no recovery. Exactly the same symptom attempting to get the phone back into any of the CM9 roms (nightlies or RC2). Ended putting the phone on Paranoid Android as well.

Device 3 HTC Sensation

Had a lot of trouble trying to flash CM9 on this using CWM. Random bootloop with no recoveries. CWM at that time was 6.0.0.8, which I had lots of trouble flashing Gapps on. More on this device posted here: http://xdaforums.com/showthread.php?t=1786703

And finally, one other observations across all these devices. Somehow with CWM v6.x.x.x I had rather poor battery life. For instance, on CM9 Nightly 07/23, say I started with 100% charge in the morning at 8am, by 12pm, I would be looking at 80% left. Once a week, I will let the phone shut itself down on low power, and charge without switching the phone on. On any other evenings, I would plug the phone and leave it charging overnight, e.g. at 10pm with only 30% left. I have constantly noticed that within a few minutes, it jumps back to 40%, which is rather odd. A 10% charging achieved within minutes is rather unusual.

I have also noted that, when the SGS i9000s ended in the bootloop / no recovery situation, the phone can never be charged. Plugging the phone for charging will the a blank battery icon lit up, with the swirly thing on top of the icon appeared frozen and it stays that way.

Being on lower version of CWM, in this instance, v5.5.0.4., I can observe the units (observed being the keyword here) charges "normally", i.e. no funny 10% charge achieve within minutes. Also, battery life are much better as well, i.e. only 10% drain between 8am (100%) to 12pm (90%).

So, not being a developer but someone that likes to tinker and observed:

- Is it possible that newer version of CWM potentially have some impact to battery life?

- Is it possible that how CM9 is being flashed onto a phone has potential issue? I find it a bit disturbing on an initial flash from stock to CM9, I had to pop the battery out after the flash initially loads a new CWM onto the phone. Then start the flash again with the newly loaded CWM.

I am hoping all these I have experienced in a short amount of time can be helpful to potentially looking into where issue might be. Most people have one phone and tested across different kernels and ROMs. I had the luxury of testing across three devices on a narrower choices of kernels and ROMs.