Persistent malware warning

[BOF]

Apologies if this is covered elsewhere, I can't find any mention.

When I try to install the new version(2.5.0.0),I get this error message;

Malware found C:\windows\system32\pxwma.dll

The warning advised me to remove it with an antivirus application.

I did a thorough start scan with Avast Pro. It found a couple of root kits,which I removed.

Warning still there.

Full scans with Spybot, Comodo AND Malwarebytes trying again between scans.. Nothing found. Warning remains

Clean install attempted having removed all traces of Sharaeza as per Shareaza clean install instructions. Warning remains.

Any advice would will be grate fully received.

PS; I had been having problems with the old version too.The connection settings wouldn't 'stick'; the box "allow UP device kept unchecking itself.