Blank page in Firefox when trying to reply to an email

Blank page in Firefox when trying to reply to an email

 I think this is a problem with firefox NOT Zoho.

Each time I try and reply to an email using my Samsung netbook, Firfox tries to open a blank html file. This only happens on my netbook. When I do the same thing on my office Laptop, no problem. I have checked all my firefox settings and can't see anything different between my office pc and the net book. Running version 3. 0.11 of firefox both machines running windows xp.

If I try and cacel or the open the blank html  it just shows my reply email with a blank body which I can't edit. Really weird.

Has anybody else had the same problem?