You were redirected to a different page because the old address may have been part of a Blogger-hosted post. This blog has been moved to WordPress and the addresses to the posts have changed.
However, this site is doing its best to locate the post that you were looking for by using the information from the adress. You may also use the search function in the top right corner of the site to find the post you’re looking for.
If you really need to get to the original post, you may try to manually change your address in the following manner:
Change “blog/flush/” in the old address:
http://www.ivanwlam.com/blog/flush/2009/04/what-am-i-doing-apr-2009.html
To “archives/blogs/flush07/”:
http://www.ivanwlam.com/archives/blogs/flush07/2009/04/what-am-i-doing-apr-2009.html
In any case, it is a good idea to update your bookmarks.