having the same problem

microb almost unusable. for any page that I need to read more than 10 seconds anyway.

luckily there is opera but that doesn't help with youtube video which I can only watch for 10-15 secs

deleting the profile folder (the microB folder inside the .mozilla folder) seems to have fixed the issue, i dunno for how long though, also, clear cookies, cache and authenticaded sessions, and make sure the user agent string is the default

Could the problem be with Hide User Agent? My problem went away by actually modifying the custom user agent, but then it reappeared later, so I again removed the customization (as I had done previously). Now microB is again working normally, but for how we will see If the problem returns I am going to uninstall Hide User Agent to see if it makes a difference.

It seems somtimes having my N900 overclocked will trigger the glitch, setting max clock back to 600 makes it work again don't even have to shut down microB