I have an Ubuntu 10.04 server that is hosting websites among other things. I have recently been having issues with it where I can't connect to it or any websites or anything, when I check the server the disk activity light is steadily blinking. I reboot the server and everything is ok again for a day or two. I found some malware/viruses on it and removed the infected files but it still keeps happening. I have also been checking logs but have found nothing that indicates what could be causing it. It appears to be a DoS attack or something. Can someone help me troubleshoot this issue? I was trying to find a process log that might show what processes were running when the issue occurs but I haven't found anything yet. Thanks for any help in advance.