Thanks to both of you. Yes, AVAST! screams off a loud bell and I do not move it to the "chest" for deletion - I instead delete to trash and then manually WIPE the file with 35 overwrites.

I have under "filters" put ".exe," as one would be foolish to download an executable. I also right-click ALL files in shared folder from time to time (or upon download) and scan manually with AVAST! despite the fact that they're "checked automatically" upon download.

Another safeguard (for me - perhaps not for everyone) - is find the host of such files and not only block that particular address - but find others starting with the same number, and block THEM ALL - for example:
xx.*.*.* -- that seems to eliminate many of them. You also cut down search results that way - but who cares if the "results" were worms?

Thanks again - both of you - cheers and happy Limewiring!/p