I'm getting killed by this bug.
I can log into my developer account and my sandbox account from Force IDE.
When I try to log into the production account I get the following error:
Unable to connect to hostname 'login.salesforce.com':
Invalid username, password, security token; or user locked out.
Please verify and/or change your credentials.
XXXXX'd out my username for security reasons, but it's my valid username in prod.
I'm able to use these same credentials to access the salesforce.com dashboard and the Force.com REST API in production.
NOTE: Another account on the same domain works. So potentially locked out from Force IDE? Any tips on finding this setting in the salesforce dashboard?