Sounds a bit suss to me, none of those accelerators work and you may have downloaded a virus or some spyware...
Try doing a full system scan with your Anti-Virus scanner and also one with your Anti-Spyware scanners...
If you don't have any, here is a list of freebies...
Anti-virus:
avast! AVG free Avira Antivir Antispyware etc: ad-ware __(FREE) Spybot - Search & Destroy __(FREE) AVG Antispyware (formerly Ewido)
If you come up clean and can't get to the bottom of this, could you post these details please...
http://www.gnutellaforums.com/connec...-you-post.html