As much as I'd like to give CS4 a chance, I the current solution to the bugs is not to blame drivers or fonts or virus scanners or third party plugins. The current solution is to use CS2 or CS3 until someday a mega-patch is available to make CS4 function as advertised.
Have you tried disabling font preview in preferences - it might help.
What specs do you have? We cannot help if we don't have these details as every configuration is different.....just saying it's too slow isn't enough.
Adobe Photoshop Version: 11.0 (11.0x20080919 [20080919.r.488 2008/09/19:02:00:00 cutoff; r branch])
Operating System: Windows XP 32-bit
Version: 5.1 Service Pack 3
System architecture: Intel CPU Family:6, Model:15, Stepping:6 with MMX, SSE Integer, SSE FP, SSE2
Physical processor count: 2
Processor speed: 2128 MHz
Video Card: NVIDIA GeForce 7300 GS
Video Mode: 1920 x 1200 x 4294967296 colors
Video Card Driver: nv4_disp.dll
Driver Version: 6.14.11.7824
Built-in memory: 2047 MB
Free memory: 1308 MB
Memory available to Photoshop: 1692 MB
Memory used by Photoshop: 64 %
Image cache levels: 8
Serial number: ***
Application folder: C:\Program Files\Adobe\Adobe Photoshop CS4\
Temporary file path: C:\DOCUME~1\Khepri\LOCALS~1\Temp\
Photoshop scratch has async I/O enabled
Scratch volume(s):
E:\, 10.00G, 1.94G free
H:\, 10.00G, 9.16G free
Primary Plug-ins folder: C:\Program Files\Adobe\Adobe Photoshop CS4\Plug-ins\
Additional Plug-ins folder: not set
Is H:\ external?
Turn off your OpenGL option in Preferences ...
Disabling OpenGL does indeed make text typing a pleasure - tap the key and the letter appears immediately on the screen. With OpenGL enabled the text can appear 3 or more seconds later.
No doubt the problems are related to sloppy video driver software, but where in the following document does it indicate that OpenGL can affect the text tool.
already have opengl on
Yes, but he said to turn it off.