Switching from X-Window to VT

[sdrb]

Hi,

I have a question regarding switching from X-Window to virtual terminal. 
Usually I use both of them and I very often switch between of them.
The switching process usually takes 3-8 seconds (X11 -> VT).

I have Intel E8400 processor and GF7600GT and I wonder why does the 
switching from X11 to VT take so much time, while switching in opposite 
direction is done almost immediately.
The switching time even grows when I have firefox running with many of tabs.
Could anyone explain what's going on?

sdrb