asstonian
my experience shows, that at least 3 servers with 3 different providers is good enough. and "providers" I mean different company, city, datacenter, transit provider...
trusting single entity with anything (even if they say that they have many servers blabla... geologically blabla...)... well, you have situation like this right now :)
and no matter how big is your budget, kidnapping/blackmailing sysadmins is cheaper :P
only found this not-very-good response in english to those "experts": http://www.vvk.ee/valimiste-korraldamine/vvk-uudised/vabarii...
but saying "terribly insecure" is more than wrong. yeah, thare are many procedural things which could be better, but technologically estonian e-voting is secure. only serious threat is propaganda.
The Estonian ID-card and Digital Signature Concept: http://www.id.ee/public/The_Estonian_ID_Card_and_Digital_Sig...