Memory Issues on VPS

I just purchased VPS hosting recently and transfered my blog over. Since then I have had huge memory consumption. There is nothing in the error_log files and everything looks fine. To be on the safe side I deleted the entire blog, and imported the xml file and set up everything from scratch.

I am averaging this 3.5% Memory and 2.5-3.5% CPU per /usr/local/apache/bin/httpd -k start -DSSL

When I do a trace on them I see a bunch things like this:

access("/home/jakets/public_html/.maintenance", F_OK) = -1 ENOENT (No such file or directory)
gettimeofday({1263631724, 78445}, {300, 0}) = 0
access("/home/jakets/public_html/wp-content/languages", F_OK) = -1 ENOENT (No such file or directory)

access("/home/jakets/public_html/wp-includes/languages/en_US.mo", R_OK) = -1 ENOENT (No such file or directory)
access("/home/jakets/public_html/wp-includes/languages/en_US.php", R_OK) = -1 ENOENT (No such file or directory)

The start of the trace shows this: Process 32234 attached – interrupt to quit

Is all of this normal? I was on shared hosting and server load was a big issue for my site (15K page loads a day) but memory never got over 45%. Now on the VPS (with 740MB ram) I hit 100% memory occasionally (load is fine usually), and hover at 60%-70% very often.

The site URL: http://farmvillefanatic.com

I asked my host about this and here was their reply:

Dear Jake.
This is php scripts errors. Please contact your PHP developer for resolve this issue.