Which font are you using in the file panel?

[ronthai]

Trebuchet 10 and 8

[jinsight]

I use Arial, Regular, 10 with 108 DPI.

Here are all fonts mentioned so far:

Arial 8, 10 or 12, Regular
Arial 8, Narrow
Arial Unicode MS,8 or 11, Bold
Consolas, 10 or 11, bold (dark text on light background)
Georgia 14 pt for file list, Georgia 11 pt bold for Main Window
Lucida Sans 8 or 9, or 10, Regular
Lucida Sans Unicode 8, 9, or 10 depending on the computer, monitor
Microsoft Sans Serif , 8 or 9, Bld
Segoe UI, 8, 9 or 10, bold. Semibold or Standard
Tahoma, 8 or 9 or 10 , Bold or Standard
Times New Roman 10 or 11, Bold for dialog box at 1920 x 1200 resolution
Trebuchet MS 8, 10, 11 or 12, Bold
Verdana 8, 9 or 10, 120 DPI