Not likely.
Ad-Aware does not affect my I.E. 6 and Ebay's pages load without any problems.
Try the following and see if it'll solve this problem:
First try System File Checker:
Start | Run: SFC /SCANNOW
Insert the XP CD in the drive.
OR
Fix for Explorer:
1. Quit all programs that are running.
2. Click Start, and then click Run.
3. Type: regsvr32 urlmon.dll,
4. Click OK.
When you receive the 'DllRegisterServer in urlmon.dll succeeded' message, click OK.
If this does not resolve the problem, repeat steps 2 through 4 for each of the following files
(in step 3, replace Urlmon.dll with each of the file names below):
Shdocvw.dll
Msjava.dll
Actxprxy.dll
Oleaut32.dll
Mshtml.dll
Browseui.dll
Shell32.dll (Windows XP and Windows 2000 only)
Don't forget to leave a space between 'regsvr32' and the .dll,
and don't forget to click OK