its a problem with warcraft 3 itself, i dont see how it isnt something blizzard shouldnt be responsible for.
Nobody's sure exactly what the problem is. If it's a problem solely caused by DotA, then it lies in the makers of DotA to fix. Luckily, DotA 6.52e is out. From the changelog:
6.52e Changelog:
=================
* Fixed some critical bugs introduced in the 1.22 patch