Recent rumor is Sachalayatan, a Bangla group blog banned by Bangladdesh government. It’s true no one from Bangladesh could access sachalayatan.com.
I tried ping, and it’s worked fine.

No doubt only some port, probably only ’80’ port blocked (DNS works fine). You can access (those from Bangladesh) all other ports, and won’t get any more “The connection has timed out”.
Try yourself: http://www.sachalayatan.com:2086/

Solution from sachalayatan is very much simple, change your apache port from 80 to something else.
Question is, who blocked this ‘port’ therefore sachalayatan.com ? May by BTTB (BTCL), newspapers said BTTB refuse to comment anything about sachalayatan.
Big question, is it done by sachalayatan itself? They off course could done this to get media publicity by filtering only IP’s from Bangladesh. This “Sachalayatan blocked” news could publicize them well as recent ‘freedom fighter’ issues involved. However, nothing confirmed, and there is no reason to claim something without knowing exactly what happened or happening.
Whoever blocked, no one from Bangladesh could access sachalayatan directly, people browsing them by using online proxies and/or other way out there.
UPDATE
Sachalayatan not blocking themself, confirmed. It’s good to know that they are not the culprit but it’s indicating something unfortunate issues!
BTTCL down at this moment since 2 AM BDT either because of submarine cable disconnected or for some unknown ‘upgrade’!!
ADDITION [18 July, 2008 11:30 PM]:
A little test to understand the problem not at Sachalayatan end:
Try to visit:
1. http://www.sachalayatan.com/
2. https://www.sachalayatan.com/~sachalay/ (accept the SSL warning)
(1) and (2) serving from same server and locate same page. If you can’t access (1) but can access (2) what that means? No IP filtered and no technical fault from sachalayatan server, the problem reside at the middle of your connection (BTCL).