another difference about the Post Office is that they regularly use
one dollar coins in their vending machines...if fact i wonder if the
casinos are the only other institutions that use the dollar coins
regularly...hmmm...might there me a connection??!! (have you heard
that postage is due to go up again to 42 cents next year?)

If you want to see how many bills of all denominations are circulating, go to www.wheresgeorge.com (there is a canadian equivalent site, too) this is where people track the location of
paper money...there are thousands of $100 bills listed there....

i have not heard of bank info trouble such as you experienced,
but have heard that if a transaction is over $10,000 it needs to
be traced and recorded.

if you ever get a bill that has a "where's george" mark on it...
look up the serial number...it is interesting to see how and where
it circulates.

since people rarely send cash in the mail,
it doesn't often travel huge distances, but
some times it does, when they go to far away
places and spend it.