When I clicked a link instead of taking me to the correct page it would take me to siteik.com, and then immediately redirect to http://someipaddress/.... which then displays various advertisements.
I'm getting that as well.
Some other curious symptoms:
When I view my network connections, there's nothing listed even though I have internet connectivity. After a few moments I'm greeted with "The Network Connections Folder was unable to retrieve the list of Network adapters on your machine. Please make sure that the Network Connections service is enabled and running." The Network Connections service is started. Restarting it yielded no change.
I have the Windows XP default (blue) theme. A few minutes after my computer being on, the theme mysteriously changes itself to classic.
Spybot's website, safer-networking.org, is unreachable (can't even ping it). Consequently I can't install Spybot even after downloading it from a different site because it evidently downloads extra files during the install process.
Operating system is sluggish. Likes to hang for long periods of time.