Newly registered members joining LAL are requested to make an introductory post within 3 days from the date of registration & activation of the account. If you haven't made at least 1 post on the forum within that time slot the account will automatically deactivate.
The adjustment has been made as an anti-spam measure. (A spate of members joined here in the past week, all of which on investigation turned out to be known spammers). These accounts have now been deleted.