After the server is idle for about 20-30 minutes it takes it to load a simple image about 20-30 seconds, after that its like it wakes up and starts doing it at normal speed, really fast. This is really a problem, since it looks like the server doesn't work, if somone comes on it.
And it's only slow for the first person that comes, so its not reverse DNS lookup. And its even if link a simple image.
Any help appreciated!