Hi, similar thing for me - with the first update I lost the sidebar on the left, including all content in there.
Now with the WordPress Update 3.4.1., I lost access to two of the three sidebar/footer widgets.
I still see the contents of the "subsidiary widget" (the footer) and "after singular" (after posts), but I cannot access them anymore in the design/widget area.
This is very annoying since my contact details are down there and I would like to change them, among other things. I hope the developers will bring the function back with their next update.
I love ascetica, and hope I do not need to switch to another theme.