ThrowMacValidationError on Iphone & Android
<p>I have a web application written in ASP.NET.
I have some wierd problems sometimes in which I get ThrowMacValidationError/Invalid viewstate.
I have noticed that these errors occur in android clients and/or iphone clients.
However, I've tested my site in both devices and did not have this problem.</p>

<p>What can cause this?</p>

<p>Thanks!</p>

<p>Update: It happens on IE9 too sometimes.
This seems to be very 1 out of many requests... I cant point my finger on this.</p>
