DMG checksum errors

Whenever I download large (more than a few MB) dmg files at work (PC, Windows XP, Firefox) and transfer them to my Mac using a USB flash memory drive, opening the dmg fails with a checksum error. If I re-download the same file with the Mac, they work.
This has already been a problem with my previous iBook G3, and now with my new MacBook. Any ideas what the problem might be? Are there any special Firefox settings or USB drive formatting required?
Thanks,
Victor
MacBook white 2GHz / 1GB / 80GB   Mac OS X (10.4.7)  

First I made sure the boot disk was OK, as well as running a memory check. Then I booted the system from a backup drive that contained an identical OS. The problem didn't show up running under the backup drive. I had previously determined that the problem was very "low level" (possibly in the kernel) because it was present even when dmg files were downloaded using "curl". Something was wrong with network binary downloads.
This all pointed to a kernel issue, so I simply copied the kernel and symbol table from the backup OS into the boot disk root. After reboot, the problem disappeared.
I can only assume that the original kernel got corrupted because of a kernel crash caused in my case by bad blocks on an external firewire drive.
--dick peskin
Dual G5    

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    First I made sure the boot disk was OK, as well as running a memory check. Then I booted the system from a backup drive that contained an identical OS. The problem didn't show up running under the backup drive. I had previously determined that the problem was very "low level" (possibly in the kernel) because it was present even when dmg files were downloaded using "curl". Something was wrong with network binary downloads.
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  • Photoshop 6 trial .dmg checksum error

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  • PS CS5.1 on Mac "unexpected error...shutting down" Reinstall? But dmg file has checksum error. Now what?

    All my CS5 products open fine, but PS. It starts to boot then breaks off, "An unexpected and unrecoverable problem has occurred. Photoshop will now exit." with a Quit button. It has worked fine in the past. (Does it perhaps not work in OS X Yosemite?)
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    You've got a corrupted download.
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    Quote
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    Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact [email protected]

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    Many thanks for your collaboration

    << Do not post the same question across a number of forums >>

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    try to check the size of the file you copy if there are both equal.
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    val2 varchar2(100);
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    phani

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