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Title: 50% failure rate
Review: Two new SanDisk Extremem IV CompactFlash cards. A 2 GB & 4 GB. The 2 GB failed. Only had one failure on previous SanDisk cards in the past several years. One of my first two Extreme IV cards failed. The Extreme IV has some serious reliability issues in my experience. The 2 GB card was formatted, re-formatted, and fails after about a dozen shots. The camera, D300, was tested with 4 Extremem III cards and the working IV 4 GB card and no issues.
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