If it pauses when you first start to use it, this is maybe due to your power saving settings - internal hard disk do this as well.
One other thing, apparently there is a problem with the DMA setting in XP (although I am not sure if this applies to your external drive) - however, to make sure it is set - goto devices manager turn DMA transfer off then type apply, then reset DMA and then apply.
Being a fire wire model it will be a high speed USB connection so make sure you have the latest drivers from Microsoft as well as drivers for your motherboard.
Goto Seagate web site and download there disk diagnostics program - this will tell you if there is a hardware problem with your drive. Also have a browse of the Seagate web site for clues.
Hope this helps,
Peter
i have a external case USB 2.0 which contain a segate 80 GB HDD [wt fire wire] the prob i face is it pause for a sec or two when i copy a data in or when i play movie driectly from the removable HDD.. currenty m working on intel P4, win XP(SP1) but i did tried this on other OS like 2000 and ME, but the prob remain the same.
i do have some small pen storage [256 MB] but they seems to work fine on the same PC

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