Bullet text inside the Tables

Hi there,

I faced many times this problem. Whenever I place the bullet text inside a
table, for the first time the indentation will be correct as per my
requirement. But when I open the file another day to incorporate some other
things or corrections, I find the bulleted text inside the table is indented
near to the bullet with no space between. The same with some files, many
slides containing tables. Sometimes the file works good but sometimes the
indentation goes wrong. Can anyone explicate the situation and can give the
permanent solution??