In a statement issued directly to Gizmodo these evening, a spokesperson for Google has confirmed that Chrome is indeed to blame for our frozen and crashing new MacBook Airs.
"We have identified a leak of graphics resources in the Chrome browser related to the drawing of plugins on Mac OS X. Work is proceeding to find and fix the root cause of the leak.
The resource leak is causing a kernel panic on Mac hardware containing the Intel HD 4000 graphics chip (e.g. the new Macbook Airs). Radar bug number 11762608 has been filed with Apple regarding the kernel panics, since it should not be possible for an application to trigger such behaviour.
While the root cause of the leak is being fixed, we are temporarily disabling some of Chrome's GPU acceleration features on the affected hardware via an auto-updated release that went out this afternoon (Thursday June 28). We anticipate further fixes in the coming days which will re-enable many or all of these features on this hardware."
Keep an eye on their Chrome release blog for forthcoming updates.