As I have posted before I have had some problems with my blog crashing and had to make some serious changes in an effort to get the problem fixed. It was down starting about 4:40 (PDT) this morning until about 2:00 this afternoon.
One of the changes was a change in the IP address. If you have a DNS cache with the old value you will still see unexpected results. So if works from one computer but not another flush the DNS cache (reboot works) and it probably will fix the problem.