For last 2-3 weeks there were quite a lot of performance issues with my website. I was looking at the same but could not get enough time to have all of them resolved together. Finally I have spent time on my web hosting and wordpress installation to resolve these issues.
I have taken this opportunity to optimize the blog also. Now the page loading time should be much lesser and you should not be seeing any issues with respect to the site performance or un-availability. If you do see some issues, leave me a comment or contact me through contact me page.
I hope you have a better experience.