While many people in the Bitcoin community claim that this is limited to Mtgox (due to their withdrawal issues), let's not forget that Mtgox still has the major

While many people in the Bitcoin community claim that this is limited to Mtgox (due to their withdrawal issues), let's not forget that Mtgox still has the majority of the trading volume. Once Mtgox enables withdrawals their cheap coins will probably drag down the prices on the other exchanges too.