Hi all, Recently I got a brand new laptop, a Toshiba Satellite C670D, running Windows 7 Home Premium. Today I found out that whenever I try to type a comment in a Youtube video using the latest version of Firefox, the keystrokes delay terrible. Sometimes this also happens in Windows Live Messenger, when I run multiple programs. I am using the latest version of Avast Antivirus. Latest virus definitions. Windows is also up-to-date. System specs Code: Item Details Windows: Windows 7 Home Premium Edition (64-bit) Service Pack 1 (Build 7601) Internet Explorer: 9.0.8112.16421 Memory (RAM): 3694 MB CPU Info: AMD E-300 APU with Radeon(tm) HD Graphics CPU Speed: 1298,6 MHz Sound Card: Speakers (Realtek High Definiti | Display Adapters: AMD Radeon HD 6310 Graphics | AMD Radeon HD 6310 Graphics | RDPDD Chained DD | RDP Encoder Mirror Driver | RDP Reflector Display Driver Monitors: 1x; Generic PnP Monitor | Screen Resolution: 1600 X 900 - 32 bit Network: Network Present Network Adapters: Realtek RTL8188CE Wireless LAN 802.11n PCI-E NIC | Realtek PCIe FE Family Controller CD / DVD Drives: 2x (E: | F: | ) E: TSSTcorpCDDVDW SN-208AB | F: MagicISOVirtual DVD-ROM Ports: COM Ports NOT Present. LPT Port NOT Present. Mouse: 5 Button Wheel Mouse Present Hard Disks: C: 149,4GB | D: 148,3GB Hard Disks - Free: C: 85,0GB | D: 2,4GB USB Controllers: 6 host controllers. Firewire (1394): Not Detected Manufacturer *: American Megatrends Inc. Product Make *: SATELLITE C670D-11G AC Power Status: OnLine BIOS Info: | | Time Zone: West-Europa (standaardtijd) Battery Status: High Motherboard *: PEGATRON CORPORATION TKBSB IP Address: 192.168.1.101 | MAC Address: E0-CA-94-97-7B-25 Host Name: ADMIN SM BIOS: 1.60 Things I tried: Closed all unnecessary programs Scanned for viruses on all drives Disabled all add-ons in Firefox Running CCleaner Full CHKDSK on all drives Defragmention on all drives Disabled the "Check my spelling as I type" function in Firefox Disabled the "Search for text when I start typing" function in Firefox The problem was still there. No viruses were found. I also don't have ATI Hotkey Polling service. I don't know what else to try. Any suggestions/solutions? Thanks in advance.