why reports server didn't display report when

[sidali]

السلام عليكم
i have a problem with the reports server
sometimes report servers doesn't display the reports
if i change the font size of some labels the report server displays report
if i give a font size greter to the label (exp 16 or more(
the report server didn't display the reports
if some one have the the solution please replay me
excuse me for not writing with arabic because of my keyboard
thanks

[sidali]

السلام عليكم
more explanation about my probelm
we use three tired architecture in our application
client,application server ,database server
client using internet explorer
application server :we use oracle 9ias
and oracle8i on the database server
when i try to made some reports ,,i can't display the report on the client ever it display on the oracle report 6i