USB copying to flash Drive very slow suddenly!

hi
i just got my brand new macbook and the ipod touch and so far i love my new mac experience at first i copied my music( 5 GB) on a flash drive and copied it to my macbook and ipod since they both r 2.0 usb they did it pretty fast!
later i was copying the same stuff to the same flash drive and it took me 2 hours to do that the ipod still syncs at a good speed but i don't know if the problem is in the drive or the laptop
i have the same problem on my windows xp machine which has 1.1 usb but the it's much slower than it's supposed to be!
i've searched the forums and other guys have the same thing but no solution !
i swithced to mac to get over windows problems but i'm starting to get disappointed!
any help would be appreciated and plz give me some advice on how to handle the new keyboard! and anything mac
thanks !

I have been experiencing the same problem with an Intel iMac 17" here. I use a variety of external powered hard drives and flash drives via USB. I notice last month that transfer speeds had dropped considerably. That and the fact it had been a year or so since I had last reinstalled prompted me to completely wipe out and reinstall the OS (10.5).
After a complete erase and install, with all current updates applied as of this date, the problem still persists. For example, I have my iTunes library on an external self-powered hard drive. Playing songs is fine, but video is unwatchable. Just now, I attempted to copy a movie file (approx. 700 mb) to a USB flash drive. The reported transfer time was 5 hours!! This is true across the board for me, no matter how the configuration is, be it devices connected directly to the machine's own USB ports or through a powered hub, having self-power or powered through the port.
This problem has only started for me in the last couple of months, with regular updates applied as they came out. Resetting the SMC has also not worked.

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Download to flash drive very slow

Downloading to a USB flash drive (2 attempted: Sandisk Cruzer and Kingston, both with plenty to free space) has always been slower than other transfers (ie, HD to HD, HD to Firewire HD), but suddenly transfer rates plummeted from a few minutes for 50 MB to well over an hour. I tried restarting alone, ran Applejack on a second restart, nothing. Folders downloaded contain jpg images, pdfs, and MS doc and docx files, nothing unusual, and pretty much the exact same folders that were already on the drive. I was updating them to include a few current files. Incidentally, after none of the above worked, I tried deleting one of the folders I was replacing (and emptying the trash) before transferring the folder to the USB drive, with no success.
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Growl has been a big problem in the past a few times.
Show Hidden Files 1.0...
http://www.macupdate.com/app/mac/29096/show-hidden-files
Hidden Way is a toggle for hidden files view in Finder...
http://www.macupdate.com/app/mac/25716/hidden-way
Show hidden files in OSX Finder
Open the Terminal and type or copy/paste:
defaults write com.apple.finder AppleShowAllFiles -bool true
Reverting to the default of NOT showing hidden files:
defaults write com.apple.finder AppleShowAllFiles -bool false
*Restart or Force Quit Finder required to take effect.*
http://www.apple.com/downloads/dashboard/developer/hiddenfiles.html
http://www.burobjorn.nl/blog/?p=96
Finder Force Quit, or restart required to take effect.

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Patriot Memory - Supersonic 64GB USB 3.0 Flash Drive
Model: PEF64GSUSB | SKU: 2731844
This USB 3.0 flash drive features quad-channel technology for read speeds up to 100MB/sec. and features 64GB of storage for storing large media files. The aluminum housing ensures durability.
Read reviews (0)
Sale: $72.98
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Yes, it indeed seems to be some type of "U3" (that's new to me) or other separate hard drive. In fact, when I insert the new stick drive into my MAC, it shows the disk image (about 1.6 gb) but does NOT show the 30.5 mb (like a Windows computer does) - it says that this drive is not in a format that is recognize by macintosh OSX and either for me to click IGNORE or EJECT. No matter which I check, I cannot "see" this second 'drive' - only if I click IGNORE then I can see it in DISK UTILITY, but can't do anything about it.
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