FLV Playng Through HTTP

i have Apache 2. Before now, on the same server i had the same OS : CentoOS at the same version but an old version of DirectAdmin with Apache 1.3, unfortunately my sysadmin installed the last version with Apache 2, so now i ask you for help.

I host videos in virtual directory : ( ex: video1.myweb.com ; video2.myweb.com )

Before Now :

CentOS 4.5
Apache 1.3
JW FLV 3.14

1. the user click the play button
2. the player put on screen the first frame of video and start loading
3. the player when have loaded 3% start play the video
4. if the buffer become empty the player pause the reproduction and restart from the current time position when the buffer is full.

Now

CentOs 4.5
Apache 2
JW FLV 3.14

1. the user click the play button

2. the player doesn't start ( black screen ) --> probably in backgorund the download is started because:

3. the user click again the button --> and now the player start the reproduction of the video

4. if the player have not loaded all the video, the player stop with black screen

5. the user click on play and the player restart not from the current posizion but from the start of the video

Clearly this depend on Apache bad configuration i think, but i have no idea how can i resolve, and on google i have not found any tutorial and documentation.