Banks have been using the last month to sell assets and raise Euros for this inevitable event, which makes the markets illogical and unpredictable. It looks illogical because they are selling assets of value to raise Euros, a garbage currency to own right now. Things that should go down are going up, and the reverse.
And it should be understood by small investors that there are no "safe" assets at all right now. If you hold Apple stock for example, thinking it is safe with no connection to Greece or Europe, a lot of institutional investors hold it as well, who may need to sell it quick to raise cash. It could either keep rising, or crash, for no reason based on its own fundamentals.