Internal Server Error

Hi Guys,

Can you guys help me, these website that I help manage has been having a lot of difficulties with Internal server error. I have noticed through Google Analytics that anytime, the amount of people on the blog increases, the frequency of the Internal Server error increases, and I have increased the WP Limit and Memory to 1GB because the server is on a VPS.

Is there something you can do about this.

The site is deolububble.com

Thanks

Warm Regards,
'Deolu