System hangs are pretty common on Win9x systems. Unfortunately, there are a wide variety of causes. One suspect, given the likely age of any machine still running Win98, is hardware failure, but right at the moment, that doesn't sound like what you've got going on.
Its not untypical for driver issues, particularly video or sound drivers, to cause startup/shutdown hangs, but that sorta fades as a real strong contender in your case, since you say the machine sometimes goes a good long whie between hangs.
Don't really have a lot of info to go on here, but I sorta suspect a resource issue. Out of curiosity, what antivirus are you using, and what version?
roverroad wrote: ... Microsoft stopped supporting Windows 98 ...
Not exactly - soon, but not quite just yet:
Quote:Microsoft:
Windows 98, Windows 98 Second Edition, and Windows Millennium Support Extended
Updated Clarification on the Windows 98, Windows 98 Second Edition, and Windows Millennium Support Extended Announcement
Microsoft is pleased to announce a clarification in our extended security update support for Windows 98, Windows 98 Second Edition, and Windows Millennium (Me) Editions forcritical security issues. As part of this extended support, Microsoft will provide information about whether critical issues affect these operating systems. Microsoft will provide security updates on the operating systems that are affected and the severity rating is critical.
Key Dates:
- Paid incident support for Windows 98, Windows 98 Second Edition, and Windows Millennium Edition (Me) is available through June 30, 2006.
- Critical security updates will be provided on the Windows Update site through June 30, 2006.
- Customers may request non-critical security fixes for Windows 98, Windows 98 Second Edition, Windows Me, and the most current version of their components until June 30, 2006 through typical assisted-support channels.
- Windows 98, Windows 98 Second Edition, and Windows Me downloads for existing security issues will continue to be available through regular assisted-support channels at no charge until June 30, 2006.
- No-charge incident support and extended hotfix support for Windows 98 and Windows 98 Second Edition ended on June 30, 2003.
- No-charge incident support and extended hotfix support for Windows Me ended on December 31, 2003.
- Online self-help support will be available until at least June 30, 2007.
Details:
Windows 98 and Windows 98 Second Edition support was scheduled to end on January 16, 2004. The continual evaluation of the Support Lifecycle policy revealed, however, that customers in the smaller and the emerging markets needed additional time to upgrade their product. Therefore, Microsoft will continue to support Windows 98, Windows 98 Second Edition, and Windows Me through June 30, 2006.
Critical security updates will be provided on the Windows Update site through June 30, 2006.
Microsoft will not publicly release non-critical security hotfixes for Windows 98, Windows 98 Second Edition, or Windows Millennium Edition. However, customers may request a non-critical security hotfix through On-Demand Security Hotfix support, which is offered for these products through June 30, 2006. When a request is received, Microsoft will investigate the issue and try to provide an appropriate response to the customer ...