Adobe has also disclosed in another TechNote that Photoshop CS5 can crash or hang when using the Type tool if any of these fonts are installed/activated:

21kannmbn_ttf
GURAKH_S.TTF
JH_TITLES.TTF
SCREEN__.TTF
SEVESBRG.TTF
SF Tattle Tales Condensed.ttF
ZEROGEBI.TTF
Zippy.ttf

Read more at: http://kb2.adobe.com/cps/846/cpsid_84672.html