I also tried the .100 release but it just killed my battery in about 30 mins...
Some icons disappeared after I installed 5.0, but that is a limitation of the application (Docs to Go), however, I am able open Word, Excel and PPT docs without any issues.
I also am able to use all UMA (WiFi) functions on both private, public networks...
No issues with either BES or BIS.
Some themes need to be setup like I want them again after the upgrade, however, I do see a gain in loading, searching etc.
My BB:
8900
5.0.0.93