Pandoras box

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Pando′ra's box′

a source of extensive but unforeseen troubles or problems.
References in periodicals archive ?
The coolux Pandoras Box system is extending its market presence in the Middle East,witha new distribution partnership between coolux Media Systems and TechnoPro llc, a Middle East-based company in the entertainment andtechnology sector.
He went on to say the president also warned that the formation of these provinces should not be on ethnic basis as it will augment ethnicity in the country and would open new Pandoras Box; rather they should be formed on administrative basis.