I think that I have a security vulnerability, but I don't know where!
On five separate occaisions recently, the file sp.exe has appeared on my computer (spooner-B trojan/virus). I am running up-to-date virus checking software (Sophos) that does not seem to notice the file being created and I am not agreeing to any file download. Zone alarm does not block the download, even though I cannot see how I could initiate the download and therefore I suspect this to be some form of attack on my PC. I have even installed a Draytek 2600 series router with firewall, but the file has appeared on the computer since doing this.
Oddly, I also frequently get a sound like dripping water when browsing web pages. It always seems to be a different site that makes the sound first, but once it starts, it reappers at irregular intervals (and is so annoying, I often resort to turning off the speakers).
I don't think that the problem is unique to my computer as it has also found its way on to my work computer - running Sophos AV that is updated by the Enterprise server hourly and behind a Linux based firewall (Navaho systems).
Has anyone got any suggestions ho this file keeps on getting on to my computer?