Since around June 27th or 28th StumbleUpon has several issues, ranging from slow stumble interface load-times, the inability to send items or messages to friends and Stumbles not showing up. Also many users are seeing error messages about invalid authentication, cookies and computer clocks being too fast.
It appears that an update caused much of the issues and several suggestions have been made to get rid of the issues.
I love StumbleUpon and am glad they have a staff that stay on top of things, such as fixes. In the SU help forum several Stumblers and SU staff have posted suggestions on fixing the issues.
Here are several suggested fixes:
1) Clear your browser cookies and cache, then sign out and sign back in.
2) Uninstall your current toolbar and install the latest beta of the toolbar.
3) Use CCleaner
4) disable or update the NoScript add-in, if you have it installed.
I hope this helps my fellow Stumblers that might be aware of the issues over the weekend.
The SU engineers say the fixes are in, but some users may still be having issues.
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