Big flaw in Leopard regarding External Drives and DISK UTILITY

My macbook pro with Leopard 10.5.3. is not recognizing my drives and does not let me use or move files into them. File corruption in drives. Does not mount or unmount.
THe disk utility cannot repair these problems.
Now I'm at the 3rd drive getting corrupt in the last week.
Is Apple coming out with an update to resolve these issues?
In the meanwhile I saw this page on the Seagate web sites.
https://seagate.custhelp.com/cgi-bin/seagate.cfg/php/enduser/popupadp.php?p_sid=dLEqXr6j&p_lva=&p_li=&p_faqid=5005&p_created=1195077097&psp=
Any help will be appreciated.
Thanks,
Antonio

You can get dozens of "not me" or "yes" opinions, but you might want to look at reader feedback reports first on MacFixit (subscription required after 3 days) or MacIntouch, or handy olde Google.
There have been problems with external drives mounting, not unmounting, a known issue during shutdown, that seems to affect a number of drive cases.
Note: it helps to narrow down and ask/focus on what you are using, I assume by your link, that you are asking about a Seagate case, so issues with LaCie, Maxtor, Initio may or may not apply.
By 3rd drive, I assume same case? rather than disk drive, or same make model in each case?
For the record, years of using Oxford based and no issues, I avoid all the name brand cases in favor of the 'build it yourself' or OWC FireWire/USB Mercury (not that there aren't a few reports of problems, but I think much less).
Also, check www.xlr8yourmac.com for its "Drive Upgrade Database" reports, too.
http://www.macintouch.com - hard drives a good start.

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