Potential problem with a mod?

[tadaensylvermane]

I recently started getting game stuttering issues along with near freezeups where I lose all control and mouseclicks and keypresses result in a beeping sound from my speakers. Could this be caused by a mod, and if so how would I track it down as there are no errors generated when this happens?

If you know please reply quickly as I have a ui I uploaded just the other night and if this is a rogue mod its in the ui I uploaded.

This has been happening for awhile now long before I assembled the UI however, since 5.2 dropped. Just want to be sure on wether or not an addon could do something like this. If it can then I must educate myself more about these things before putting a UI up for download.