pgAdmin version:1.10.0 and 1.10.2
OS: Linux qianjia-ubuntu 2.6.31-20-generic #58-Ubuntu SMP Fri Mar 12
05:23:09 UTC 2010 i686 GNU/Linux
wxWidgets version: 2.8.0
postgresql version: 8.4
Reproduce steps:
1. open pgAdmin
2. open a connection to a database
3. open the Query window
4. input arbitrary Chinese character by iBus PinYin