In the 08/2006 issue of Forbes magazine there is an article “Nothing for Ernst&Young” describing departure of a few groups of senior-level employees from Polish subsidiary of Ernst&Young who founded their own companies. Other similar cases are also mentioned:

Marek Dojnow, after many years at ABN Amro, runs FIDEA, an investment boutique, Przemysław Szmid, after an adventure at MeesPierson bank, advises under independent firm called Trigon, investment advisor Maciej Kwiatkowski, after working for CA IB and Skarbiec, founded his own investment fund Opera.

The whole content of the article (in Polish) is available on Forbes website.