Copying to MicroSD card from Ubuntu 9.04 Is slow

Copying to MicroSD card from Ubuntu 9.04 Is slow When I copy stuff to my class 6 16GB microsd card it seems very slow. This is true with multiple readers and computers, but I have only tested it with ubuntu 9.04. In /var/log/messages I get the following a bunch of times during the transfer:
Asked by: Guest \| Views: 284

Total answers/comments: 2

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Guest [Entry]

"Have you tried other cards in the same readers and gotten transfer speeds? It could be none of the readers support the highest transfer speeds.

The resets, from what I know, could be a bad card, a bad reader, or a bad USB port. The USB or card connection could be intermittent and disconnect for a moment due to fan vibrations from the computer. It could also be drivers, but on multiple computers, it seems unlikely (unless they are all Dell)."

Guest [Entry]

"I didn't think Ubuntu could use an SD card in SD mode--I thought it was using the older MMC mode because Linux can't abide by the SD consortium's restrictions on SD mode.

Short version: blame the makers of SD, not Ubuntu.

Edit: I stand corrected--user is using an SD reader over USB, not an SD reader built-in to the machine."