In the same boat OP =/
I've had a LOT of shit over the course of the past 5 months
1) Employer that required ALL applicants/interviews who come to HR to take fucking IQ test - this included one's where it had shapes that would spin 90 degrees in each picture, you guess what the next picture box would look like - some of them were actually pretty damn tough. Then they had a 30 minute section on word problems with no calc - plenty that required working out/solving on paper. I had an interview, thought it. I haven't had these problems since college obviously, I did OK - they interviewed me afterwards, thought it went well - then was denied =/
2) PLENTY are demanding a) Salary requirements b) Current Salary - those 2 items (especially together) are completely deadly. They are going to judge you based on: Are you asking for too much? Are you asking for too little and desperate/unskilled? It is very clear they will toss you out like trash based on this question alone.
As far as not receiving a response? Keep fishin' - and late response can definitely be from backlog via holiday season catchup.