Large files not copying from SD Card reader

I am running Vista on my desktop.

I recently got a large memory card for my camera and began using it to take
long videos for the first time (with my old memory card I only had enough
space for still photos and short video clips). Doing this I discovered a
problem that I didn't know existed: My computer cannot copy large files using
a USB card reader.

While I haven't been able to find the cutoff point, I have been able to
determine that files over 100MB (long videos) always fail and files under
10MB always succeed (photos). The error is "0x80070456: Media in the device
may have changed". Looking at the message it occurred to me to to flipping
the switch on the card to read only, but that did not change anything, I got
the same message.

I tried the same reader and files on the same computer that is giving me the
errors but booted into Linux and did not get the error (I also used checksums
on some sample files that I copied both ways to make sure they were not
corrupt, they weren't). I tried the same reader and files on my laptop
running XP and did not get the error.

Back in Vista I tried the card from my TomTom (which has a lot of >100MB
files) because I thought the problem might be that the new card was SDHC. But
the old 2GB regular SD card in my TomTom gave me the same error. I tried
putting both cards (photo and TomTom) into my camera, plugging the camera
into the USB and copying all the files from the camera, that DID work. I then
tried plugging both cards into my TomTom, plugging the TomTom into the USB
and copying all the files, again it DID work the smaller card (my TomTom
can't do SDHC plus the large card doesn't have the TomTom software installed
and the TomTom boots off the card when one is inserted, so I couldn't test
the large card on the TomTom) and everything worked again. The problem with
copying the files using the camera is that it is SLOW: 25 minutes for 1.4GB
of TomTom files, I gave up waiting on the 6GB of videos. Same speed problem
using the TomTom as a card reader, plus the added problem of the TomTom not
supporting SDHC. On the other hand, with my card reader (booted into Linux
where it worked) I copied the TomTom card in <3 minutes and the card with the
videos in around 8 minutes or so. I am currently booting into Linux, copying
the card, then booting back into Vista and mounting the Linux drive and
copying the files over to my NTFS partition. This is actually faster than
waiting for the files to copy using the camera as a card reader, but it a
major pain in the rear.

I also tried a different card reader to see if the reader itself might have
a problem with Vista. Same problem

I searched on the internet and found lots of people with the same error and
symptoms, and none of them that I could find had found a solution, but the
latest post I found was in April, so I'm hoping that someone may have figured
something out by now.