A number of web sites that use SiteMeter tracking code to monitor the number of visitors to their site are reporting that the code is causing Internet Explorer browsers to crash when users visit their sites.

I haven't spent time testing a lot of sites, but the Gawker Media sites all seem to be affected. These include Gawker, Valleywag, Gizmodo and Lifehacker, among others.

The problem appears to be affecting IE 5.5, 6.0 and 7.0. Internet surfers using IE to access a site that has SiteMeter tracking it receive a message saying the site cannot be loaded and "operation aborted." The issue seems to have begun late afternoon Friday.

SiteMeter has not responded to a request for comment and so far has posted no announcement to its web site addressing the issue. But SiteMeter's blog has a few posts published earlier this week referencing its move to a new platform and changes to its tracking code.

A number of sites are reporting that once they remove the SiteMeter code, the problem disappears and their page loads fine in IE.

(Hat tip: Darren Paul)