Whenever I do cabal update, the response is "Unsuccessful HTTP code 403". That looks like the hackage server isn't responding, but other software tools (browsers, etc) on the computer can download the hackage database; the only program that can't get it is cabal.
Do you use an http proxy? If so, you'll need to set the HTTP_PROXY env var. Alistair Invesco Fund Managers Limited, Company No. 898166, FSA No. 119298 Invesco Asset Management Limited, Company No. 949417, FSA No. 122674 Invesco Global Investment Funds Limited, Company No. 1046873, FSA No. 141663 Invesco Perpetual Life Limited, Company No. 3507379, FSA No. 188249 Invesco UK Limited, Company No. 3004959 The first four listed companies are authorised and regulated by the Financial Services Authority. All companies are incorporated in England and registered at 30 Finsbury Square, London EC2A 1AG. UK Group VAT No. 245 055 771. ***************************************************************** Confidentiality Note: The information contained in this message, and any attachments, may contain confidential and/or privileged material. It is intended solely for the person(s) or entity to which it is addressed. Any review, retransmission, dissemination, or taking of any action in reliance upon this information by persons or entities other than the intended recipient(s) is prohibited. If you received this in error, please contact the sender and delete the material from any computer. *****************************************************************