[R-SIG-Mac] R Package Installer dialog

[Paul Roebuck]

Was curious as to why I see some packages with the same
version number in both installed and repository columns?
In general, it seems to be packages installed at the user
level, but don't understand why the distinction exists.
Checksum of some nature?

R-1.13(1958)

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SIGSIG -- signature too long (core dumped)