I watch my Slingbox on my Verizon xv6700 via both EVDO and wi-fi all the time with no problems.  You might try using it in various locations, because I do find some spots where I have what appears to be a good signal (lots of bars) where I can't keep Slingplayer connected.  Conversely, there are places where I have what appears to be a weak, slow signal (such as on the Washington DC metro) where I *shouldn't* be able to sling and I have no problems.

You might search around on pdaphonehome.com or howardforums for specific help.  I've seen plenty of people with 6800's slinging with no problem on those sites. 

Have you been able to connect to your Slingbox remotely *at all*? Connecting via your LAN (WiFi) is your local connection. It really sounds like your router hasn't been configured to forward the port to the Slingbox to allow remote connections.

-MegaZone, Sling Media Beta Manager
Slingbox PRO-HD w/TiVo Series3, Slingbox SOLO w/TiVo Pioneer DVR-810H, SPM Treo 680, SP WinXP
(I also run GizmoLovers.com)

I've got a xv6800 and can connect solidly with wifi ith slingbox mobile for hours if I so choose. My problem is with cellular connectivity. I am in one place, have 4 bars with an EV (3G) connection and it drops EVERYTIME in about 90 secs. Does anyone have any idea why the phone can't hold a connection? This goes for anything that streams with this phone. Verizon says I
have no restrictions on my acct. Network? Phone set up problem? Phone/hardware problem? Software issue? thanks, Frustrated.

I have the same set up and am having no luck in connecting. 

 Any other ideas to try?

Thanks Twizted, after running through the assisted set up again through my networked Mac, I did your process, and it worked! I'm Slinging again on the mobile! Thanks!

I would recomend looking at your device and verify that you dont have anything accessing the network. It could be something consuming your bandwidth. ALSO have you tried using the wifi/remote connection at some one elses house or work? If you have and it works well, then You may want to consider backing up your device and giving it a full reset, at that point reinstall only sling and see if it works well, if it does than it could have been a piece of software on the phone. I go through this all the time with my dad, we both have xv6800's and his is constantly jamming up from all the stuff he has on it.

Did you update the XV6800 to a different rom, say one from DCD or the Sling Box?

If you did the sling box, check and make sure that it's settings are correct, I just upgraded mine to the beta rom for sling player 2 and that changed it's IP on my net work. I didn't notice this until I tried to watch TV from my hospital bed a few days ago... a bummer of a time to discover that.

If you did the xv6800 what rom did up burn to it?

hmmm, I have not used the Verizon stock rom in some time, You may want to think about looking at www.xda-developers.com in their forums you will find a section about upgrading your device. You have a "titan" and look at the DCD Roms.

Well it worked great for a little while. Now I get the same Weak connection message and cannot watch my sling mobile for more than 30 seconds. It finds my slingbox, connects, then optimizes, then plays for 30-45 seconds, starts optimizing again while stopping, and then the weak signal message comes through. I am really disappointed.