More information would be helpful. Are you on a stock rom? Custom? Have you flashed any mods?
You are on the latest update and firmware? If you are rooted then try wiping cache and dalvik
I believe so, not rooted...
Software version 1.54.651.8
HTC SDK API level 6.17
PRI Version 1.52_003
PRL version 51100
Kernel version 3.4.0-g25057cd, root@abm030#1, SMP PREEMPT
Baseband version 1.05.20.0321_2
Build number 1.54.651.8 CL326598 release -keys