The "fast scroll" problem happens when applications auto-paste data into themselves, usually into a buffer for inspection. This often does something really important (excuse the sarcasm) like turning a paste menu or button on or off.
Starting with ClipMate 6, the "powerpaste shield" option can sometimes defeat the clipboard snooping - but not always. You can try turning it on or off, to see if it improves the situation. See tools | options | pasting.
Otherwise, you need to disable the clipboard monitoring in (or shut down) whatever program is monitoring the clipboard. Usual culprints are FTP clients, "download helpers", PGP clients, the Office2000/XP clipboard, Copernic, any any other clipboard-aware programs such as clipboard spellcheckers, printscreen utilities, etc. Remote Desktop applications often do this too, and usually have an option to sync the clipboard between sessions - turn it off.
Some specific programs known to cause this:
- CCED by http://www.cced.com.cn/
- Office Clipboard - see instructions to turn off (updated March 1, 2013).
- Tab Browser Extensions (TBE) by Hiroshi (Mozilla/Firebird) - instructions to turn off
- emule - http://www.emule-project.net/ (can be turned off in User Preferences)
- FlashGet / FlashGot for FireFox
- Google Earth - why in the world does THAT need to monitor the clipboard?
- Any sort of Remote Desktop
- Macro Programs
- FDM Download Manager
PLEASE consider leaving comments if you find an application that is causing trouble, so that it will help other users troubleshoot this.