Chi-X is having significant volume but it is lagging behind ASX. Chi-X is finding it difficult right now to take out 2.1c and maintain it on the buy. That's why ASX hasn't been trying to break 2.2c resistance level yet. Should happen today.
Chi-X volume about 5.1m
http://cmsau.chi-x.com/Trading/MarketData.aspx
(EDIT: Finally did it)