did u optimized ur tables? in myphpadmin!!
thr are several plugins which reduce server loads...
dljawed Reviewed by dljawed on . How to decrease Server load on VPS Hello guys , i have a wordpress blog with over 55k posts I have no scheduled posts so most likely this is not a cron job problem Blog has around 55k tags & 100 categories. The server load is usually around 1-2 and some times it goes upto 5-10. Rating: 5