Possible NewsFrom my experience in venture companies, it is not uncommon for companies to halt certain communications when a deal/news is coming within 3-4 weeks. They can answer unrelated questions (i.e. they answered my questions concerning the financial statements), of course, but not questions like "when can we expect to get a deal?".
Given the size of most ventures one deal can rock the stock, so they need to be especially careful when it comes to pre-deal communications. This is a liability issue since the venture exchange is becoming increasingly stringent on insider trading among ventures in an effort to improve their credibility. If the exchange had a better reputation QNC would likely be higher/more fairly valued.
I'm not saying this is the reason for the lack of communication, but this is definitely a possibility since we are expecting a response from the EPO soom (between May and June).