Hi welcome to the forums

1, I can't say that I have ever tried to send files via Bluetooth, so I can't say I have shared that problem? You may have better luck using the Search function for that one.

2, As for Facebook videos, if they are encoded in Flash10.1 then the N900 can't view them. There are more detailed answers in the Flash 10 topic but the answer is still very much the same, we only have Flash9.4 and no further news on an update.

3, If you can tell us what application you are trying to install and post these conflict errors that you have, then we would be able to help you out more with that one.

Not the best answers I know but I hope it helped a little?