Help with overloading the limits of CPU/RAM issue in a resseler account with wp sites

Hello.
Am a newbie in the forum and I have a weird problem with my reseller account.

The server that I am on has these characteristics
Intel(R) Xeon(R) CPU E5506 @ 2.13GHz/24GB ddr3
CloudLinux Server release 5.7 64 bit/litespeed webserver
And overall are 800 clients (in whois.domaintools.com that I am looking right now the Shared IP Address of the server that I am is the "Reverse IP: 1,195 websites use this address.")

And the limits are 1gb of memory and 25 concurrent connections

In the reseller account that I have I created two accounts:
1.wp multisite with 3 site in under contraction/coming soon message with 2 gb ram and 30 concurrent connections (I don't know why, I am waiting for an answer from my host provider).
The last 7 days from Resource Usage Details: img545.imageshack.us/img545/3504/1stmultisiteresourceusa.jpg


2.a wp ezine blog with 4-6 monthly unique visitors/150-200 a day visits with 2 gb ram and 20 concurrent connections (I don't know why, I am waiting for an anwser from my host provider).
with 25 Active Plugins: Admin Locale/AdRotate/All in One SEO Pack - Pro Version/Calendar Posts/CloudFlare/Contact Form 7/Easy Mashable Social Bar/FeedBurner FeedSmith/Google Analytics for WordPress/Google XML Sitemaps/JW Player Plugin for WordPress/NextGEN Gallery/Really Simple CAPTCHA/registration-login/TentBlogger SEO Categories/Top 10/Twitter Embed/W3 Total Cache/WP-DownloadManager/WP-Optimize/WP-PageNavi/WP-reCAPTCHA/WP-UserOnline/WP Smush.it/WP Smush.it NextGEN Gallery Integration
The last 7 days from Resource Usage Details: img220.imageshack.us/img220/6983/2dezineresourceusagedet.jpg

My problem is when am going to apply or save the setting of a plug in or when am going to publish or save as a draft a post I get same message:
503 Service Unavailable

The server is temporarily busy, try again later![HR][/HR] Powered By LiteSpeed Web Server
[SIZE=-1]LiteSpeed Technologies is not responsible for administration and contents of this web site!


Also it takes a lot of time for my site load. It doesn't load the virtual editor of the post. And the only thing that my hosting provider suggests to optimize my site(But, I already [/SIZE]use plug ins (CloudFlare,W3 Total Cache[SIZE=-1], [/SIZE]WP Smush.it & WP Smush.it NextGEN Gallery Integration[SIZE=-1]or) [/SIZE]in order to optimize my site)[SIZE=-1] to move to a Cloud server. What do you think about that? Should I move to a Cloud server or use CDN to my current reseller account? Also, does the problem really starts from me or my hosting has done a lot of overselling? Please suggest me anything that will be useful for my problem and if it's necessary to give you some information(That I might have forgot to mention) to help you understand.[/SIZE]

 

sounds like the server is overloaded.

 

What can I do to confirm it or else how can I understand this to a new web space in order to avoid this mess?

 

Install a Cash plug in, delete many plug in, install cron server instead of wp cron, tell the robots to crawl slow

 

i have, CloudFlare & W3 Total Cache . Am trying to have less plugins by inserting codes in the theme but they don't help me much and they don't give me any attention and I noticed that the people that have this kind of behavior are the plugin creators(I hope that this is just something random and I just have the wrong idea). And what is this "install cron server instead of wp cron"??? And "tell the robots to crawl slow", how can I do that and how can I see how often they are crawling my site?

 

overloaded clearly.