Incoming Call showing as Unknown Caller

[hellz]

Anyone having any trouble with their Tilt where it will ring once, Display the incoming call as Unknown Caller, it rings about 1 1/2-2 times on the callers end, but you get a single vibrate then it hangs up? Is this a carrier issue? Settings? I know it could have something to do with the applications I have installed, but none of them interface with the phone, or contacts. I checked all my settings and everything is normal, I'm trying to resolve this WITHOUT having to do a hard reset. Any help would be appreciated, TIA.

Here is a list of app's I have installed, if anyone can help and needs more info please feel free to PM me:
Adisasta WinMobile Download Accelerator
Adobe FlashLite
BCR World Card
C2 Firehawk
Cingular Pre_Midlets
Cingular XM Radio
Customization Contacts Plugin
DinarSoft HandySwitcher
DinarSoft TapText
duttythroy dutty music plugin
duttythroy HTC Audio Manager
duttythroy OneNoteMobile
duttythroy wmp touch skin
Finster869 WM6_RDP
Gameloft SA Midnight Pool
Google Maps
HTC HTC Home
HTC Tray App
jizy HTC Action Screen
JUVS HTC Album
lokmeup Kaiser Tweak
lokmeup Sliding Sounds
Meschle backlight fix
MobiTV
OZ Communications OZ I M
Resco Explorer
Resco FTP Add-in
Resco Registry Add-in
SBSH.net PocketBreeze
Shape Services IMPlus
SKTools
Sleuth255's PTTFix
Teksoft BlueMusic
Teksoft Finger Touch
Windows Live 10.6.33.0600


(Sorry if this has been answered but after looking for 2 hrs, I couldn't find anything pertaining to this issue.)

[shaolinmastr]

mine comes up as unknown caller for a sec and then shows the caller. ur other issues not sure. mine works great. goodluck

[rico002]

i have the same problem, it rings iwth unknown caller and then it stops and hangs up....i think its an htc or att problem with the phone...... i hope