Hi again,
A decent Uninstaller program does a bit more than simply clean out registry entries. Some compare programs and their installers against a database and removes them completely, while other types may monitor the installation process and then track system changes programs make so they can be effectively removed later.
Your Uninstaller
Advanced Uninstaller Pro
Try booting into 'Safe Mode' and uninstalling Panda. You haven't given any details about the error messages you receive, or the version of Panda you have, but you might simply have program components loaded which are blocking the uninstall.
If you still can't uninstall from Safe Mode, try following these instructions from the Panda support team:
Open the Registry from Start, Run, write REGEDIT, and click on OK. Highlight 'My Computer' at the top of the list, then go to 'Edit' and 'Find'. Type 'panda' into the box and then click on 'Find Next'. This will search the Registry for panda files. When it brings up a folder or file, press 'delete' or right-click on the highlighted file/folder and select 'delete' from the menu to remove it. Then press 'F3' to search again and find the next Panda entry.
Continue to search and delete Panda entries in the Registry until no more entries are found. Then repeat this process, this time searching for 'pav'. When both searches are complete, close the Registry and restart the computer.
Once this operation has been carried out, using Windows Explorer delete the Panda Software folder that is below C:\Program files. You should also delete the following files Windows \system: PAV.SIG, APVXD.VXD, APVXDUT.VXD, PANDA.CHP.