14-15 month after setting the VPS ,i can say it is very stable. some issues i had encountered :
- I better off without and clamav or av mail checking ,mailscanner is already filtering any dangerous files by extensions.
- My wordpress template led to some site slowness ,after checking it with Yslow , I identified it as the cause and replace it to a much lighter template.
- Had some more RAM added to the total of 384 MB for dealing with the site slowness which turned out to be from the template ,but kept going with it since it does speed up things
- Yearly averages are :CPU load is 0 % ,free memory 20 MB
Since i had some distributed spam attack i had block any host that has no reverse DNS record ,does are fall back to my next MX record which is my google apps server that have a very useful spam filtering .