While trying to install squid from pkgsrc/www/squid I get the  
following errors: (I have removed the lines that said "OK" for brevity)
How do I go about fixing this error, or is it perhaps that these  
particular patches have changed and whatever mechanism that pkgsrc  
uses to check the checksum needs updating ???

Any direction/help appreciated.

=> Checksum SHA1 mismatch for squid-2.5.9-2005040401/ 
squid-2.5.STABLE9-LDAP_SUN_SDK.patch.
=> Checksum RMD160 mismatch for squid-2.5.9-2005040401/ 
squid-2.5.STABLE9-LDAP_SUN_SDK.patch.
=> Checksum SHA1 mismatch for squid-2.5.9-2005040401/ 
squid-2.5.STABLE9-2GB.patch.
=> Checksum RMD160 mismatch for squid-2.5.9-2005040401/ 
squid-2.5.STABLE9-2GB.patch.
Make sure the Makefile and checksum file (/home/pkgsrc/www/squid/ 
distinfo)
are up to date.  If you want to override this check, type
"/usr/bin/make NO_CHECKSUM=yes [other args]".
*** Error code 1

Stop.

Thanks

Greg