I went to the Blackberry homepage and downloaded the app. It shows installed but thereis no icon for it. The icon is not hidden. Any ideas?

Had the same problem, had to re-install messenger that came with .90

I think my original problems were with the network outage, caused me to panic and install messenger from the ota site, no icon, would not work. Re-sync'd with messenger from .90 update and all is well now.

BB Messenger works fine with .90
Everything works fine, make sure to check for network availablity, etc before re-isntallating everything. PIN-PIN has been very slow since last night becasue of the outage, might not have been working at all for some people.