Avast has had new versions released since then. Creating a thread of your own helps to prevent threads from being hijacked by other posters and helps to prevent confusion when this happens. You may have similar issues but different solutions. Since you were not the original poster you can’t change the subject line to Resolved when the solution is found.
No Comment on the rest.
- What operating system are you using? 32 or 64 bit?
- What version of Avast are you using? Free, Pro, AIS?
- Do you currently have any other security software on your computer and what security software have you used in the past?
- How was previous security software removed?
- What method did you use to uninstall Avast? Did you use the uninstall tool? http://www.avast.com/uninstall-utility
- Sometimes malware can cause failure to initialize problems. Will you download MalwareBytes from here http://filehippo.com/download_malwarebytes_anti_malware/
and run a full scan? Make sure you update it before scanning. Please post the log results.
EDIT: I see you modified your post. Ad-Aware is known to conflict with Avast. http://forum.avast.com/index.php?topic=66956.0