Redirected to url4short.info when trying to visit a certain site

I think ESET may have updated their site. I decided to check again in IE to see if that message appeared, and when I clicked the link cottonball provided, I got sent here.

ESET Free Online Scanner :: Complete Malware Detection :: ESET

When I click to run the online scanner in IE, it doesn't tell me I'm trying to run it in a different browser. Shall I go ahead now?

When prompted, do I click run or save? Or does it not matter?

I started the scan, but aborted it when it detected files relating to an Ask toolbar. I use Avira Free Antivirus which comes with an option to install the Ask toolbar to get free web protection. I don't know if these files are part of Avira or something else, but I decided to abort the scan in case it removed files that might cause Avira to stop working properly. Should I restart the scan without setting it to remove found threats?

No worries. Hope you feel better soon. This is what ESET found.

C:\Program Files (x86)\Avira\AntiVir Desktop\apnic.dll a variant of Win32/Bundled.Toolbar.Ask application
C:\Program Files (x86)\Avira\AntiVir Desktop\apntoolbarinstaller.exe a variant of Win32/Bundled.Toolbar.Ask application
C:\Program Files (x86)\Avira\AntiVir Desktop\Offercast_AVIRAV7_.exe a variant of Win32/Bundled.Toolbar.Ask.D application

I didn't choose to install the toolbar when installing Avira, so I've never had the free web protection. My home page and search engines are the same as they've always been.