According to Methods and Best Practices for High Performance eCommerce with the Magento Enterprise Edition (registration required) keep alive should be off (for high traffic sites)
mod_qos can also disable keep-alive support when the server if running out of free connections.
So the question is, should I have keep-alive disabled/enabled in a low (360Mb) memory server, is there a benefit on keeping keep-alive on?
Side question: has keep-alive anything to do with having a lot of TIME_WAIT connections according to nestat?
Are TIME_WAIT connections wasting server resources, should i try (how?) to keep their number low?