Welcome to the forum.

It could very well be. 98 does seem to have a wee problem with program updates, Not vps updates though.

See this post

http://forum.avast.com/index.php?topic=26718.0

There are others also. An uninstall/reinstall usually gets you up and going again. There are instuctions in the above link.

Also you may want to help per VLK’s request near the end of that thread. It may help resolve this problem.