Soon after rolling out the service Tuesday night, the company started hearing from subscribers. Among the complaints were slow page loading and difficulty in configuring the layout and in viewing the blogs in Internet Explorer and Firefox browsers.
Microsoft acknowledged in its Spaces blog that there was a 12-hour period after the launch where Spaces "at best were extremely slow to render, if they rendered properly at all."
"We planned long and hard for this release and unfortunately it was one of those gotchas that only showed up once we were in production."
As of the last Spaces news update sent Wednesday by Microsoft, the company was working on a number of unresolved issues, including some related to email publishing, Firefox and the stats page.
Windows Live Spaces is a revamped version of the former MSN Spaces. Reports of the company working on the upgrade first surfaced on the Web in March.