The Haldex is gone but HomeOldSP = about:blank is back. It appears that HomeOldSP is created by a hidden .dll file. Until you find and remove that, it keeps coming back.

You can read about it here (link from dopey)

The tools you will need are registrar lite and Winfile.

We can give it a try here or you can follow along in the link above.
The first step is to open registrar lite and paste this line into the address bar and click go:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows\\AppInit_DLLs

On the right side, look for Appinit_Dlls, double click that line.
Post what is listed in size and value. The value should be the hidden .dll that's causing the problem.