I've witnessed the following issues since I joined the community here:
The site is somewhat sluggish for me in general, compared to other websites.
Several times a day the server's responses get slower and slower, up to the point that I have to reload pages, or copy away posts I was about to write and paste them after reload, as not to lose my text.
Once every 2-3 days, the server completely fails to respond, usually for several hours then.
I'm in Germany. In case of complete failure, I tested the connectivity from my home DSL connection, as well as from my rootserver.
Maybe the site needs a faster and more reliable hoster? ;)