Spybot is not finding my hijacker

[Sid-E]

I was hit by a drive by about 4 weeks ago. I have updated windows (XP), updated and scanned with Norton, adware and spybot. Norton found 3 viruses and got rid of them, but I’m still having major issues.

Here are my symptoms.
My browser is trying to refresh.
Browsers randomly crashing.
Browser takes me to a bizrate.com or shopping.com page when I have clicked on something else entirely.
Computer running very slow causing me to reboot 2-3 times a day.

First question.
Anyone know how I can get rid of this.

Second question.
I have tried to get the latest update from spybot and I keep getting a “bad checksum” error.

Thanks
-Sid

[md usa spybot fan]

First download the latest updates and rerun another Spybot–S&D scan:
"Bad Checksum" problems are usually caused by overloaded download servers.

To change download servers and for a workaround for "Bad Checksum" errors please see:
http://forums.spybot.info/showpost.php?p=345&postcount=2

Note: The download server can be changed after the "Search for Updates" and before clicking "Download Updates". So if you find a server that works well, you can start by using that server in the future. Also note that if you want (not necessarily recommended) you can select a server and then right click on the button and "Set this server as the preferred download location". If you do that Spybot will select that sever rather than a random server for future updates.

Additional information:
When updating, why do I get an error message that the "update is forbidden" / "bad checksum!!!"?
http://www.safer-networking.org/en/faq/20.html
How to update the program to the newest version
http://www.safer-networking.org/en/howto/update.html
If Spybot-S&D still fails find/fix the problem, consider requesting assistance in the Malware Removal forum and have one of the helpers there take a look at your system.

To post in the Malware Removal forum follow the instructions here:
Before you post a log
http://forums.spybot.info/showthread.php?t=288
Then post in the following forum:
Malware Removal
http://forums.spybot.info/forumdisplay.php?f=22

[Sid-E]

Thanks Spybot Fan

[tashi]

I have updated windows (XP)

One question and meanwhile do follow md usa spybot fan's advice. :)

When you say you updated Windows did you install a Service Pack for the first time ie: Service Pack2. (SP2)

Regards.

[Sid-E]

I have had SP2 for some time now. I just meant that I have updated it regularly as updates come out.

[tashi]

Ok thank you for clarifying, just wanted to make sure you had not installed it when the System may have had an infection. Cheers. :)