Google's Android 4.0 Ice Cream Sandwich update for the Nexus S hit a snag today, as Electronista reports that the company posted on its forums that it was holding the operating system update to "monitor feedback", after users saw atypically high battery drain on the devices. Possibly induced by a spike in processor usage, the issue wasn't enough to halt all updates worldwide, but the upgrade "wouldn't return until Google was satisfied there wasn't an issue."
The problem may possibly be related to a recent update to Android 4.0. Galaxy Nexus owners have mentioned throughout Google's online forums that they've seen battery drain issues akin to that of the Nexus S. However, in their cases, it may be that the kernel behind the low-level software on the device is artificially keeping the device awake even when the screen itself is off, depleting battery far faster than it typically would.
Google hasn't issued an official acknowledgment of the Galaxy Nexus battery issue, although it hasn't pushed Ice Cream Sandwich versin 4.0.3 update to those devices yet. We'll keep you updated what happens next, whether from Google, or others. Hopefully the issue gets resolved in the time being, though. Let's keep our fingers crossed.