It appears the problem goes deeper. This is from The Economist's weekly email newsletter:
Investigations widened on both sides of the Atlantic into the latest allegations of price-fixing among chipmakers, which this time focus on fast-memory SRAM chips. Sony said it was co-operating with an inquiry by America's Justice Department into industry-wide practices. Meanwhile, European regulators raided the offices of several chipmakers as part of their investigations. One of the companies reportedly targeted was Samsung, which was fined $300m last year by America after admitting to price-fixing in slower DRAM chips.