checksum error in source code distribution ? GHC Version 5.02.3

[Ade Azurat]

Dear GHC developers,

I have tried installing the binary package of
GHC 5.02.3 for solaris.
we do have libcurses.so.1 installed but in some other directory than
/usr/lib. The ghc complaint that the libcurses cannot be found.

I tried to install from the source code distribution
(perhaps i can inform the exact location of libcurses, is it ?) 
but I encounter checksum error when i untar the source code. 
Is't something wrong with the zip file
or just locally in my computer ? 

Thank you for your explanation.

Kind regards,
Ade Azurat