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What kind of file are you moving that moves at that speed? Highly fragmented files move slower than compact ones.

Try this test. Copy a large file (20-30MB or larger) from HDD to stick and note the stated speed and number of seconds it takes. Then copy it back from stick to HDD into a new folder and record the same stats. Then copy it back again from the new folder to the stick and record the stats. Any major differences?

Another thing to test is to plug the stick into one of the usb ports in the back of the case that go directly into the motherboard and run the same test. Sometimes it is those external USB connectors that are not running at USB 2.0 speeds. I had one. Had to get a replacement from Antec.

What kind of file are you moving that moves at that speed? Highly fragmented files move slower than compact ones.

Another thing to test is to plug the stick into one of the usb ports in the back of the case that go directly into the motherboard and run the same test. Sometimes it is those external USB connectors that are not running at USB 2.0 speeds. I had one. Had to get a replacement from Antec.

Well, i moved a file of size 700 Mb(a movie) and had speeds of 5Mbps.

And, i knew about that case issue so i tried the MoBo's USB port with the same results.

Went to the SanDisk website. Found only one review for the 8GB Cruzer Blade. The reviewer said he was disappointed with the write speeds. Only 4MB/sec. Perhaps you're actually experiencing the high end of the write standard.