A6 rear tranny seal...weak point?

[cobram at juno.com]

Just wondering whether any A6 owners have had their rear automatic
transmission seals leak.  A friend who owns a local shop had two come in
this week with the same seal leaking.  It's a straightforward fix, just
have to remove exhaust and pull the driveshaft back (no need to
completely remove shaft).  

Checked the Audi/VW bulletins site  http://tech.vw.com/  and there's
nothing there about this.

Was this just an odd coincidence or is this a weak point?  

BCNU, 
Cobram at Juno.Com
http://www.geocities.com/MotorCity/Flats/1469/

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