My wife received a first letter from CHC today. As I have previously posted that I have my area's postman phone number, so I called him at the beginning of February, and he was on 3 weeks' vacation. He returned back to work on February, 20th and delivered the letter. Letter issued date is February, 01, so we received that letter 20 days late just because of the postman's vacation, and now we have only 10 days to send everything since letter states that we have to send them the documents within 30 days.
I would suggest check with your postman close to your expecting timeline because I guess post offices in Pakistan do not have any backup to distribute the mail incase of regular postman's absence..
My file was transferred on December 2, 2010, and they ask to send them some pictures, PCC and re-filled forms.