Thanks for check.
Can you specify more or less how long is now freeze (1s, 10s, 60s)? Is this freeze occur only once at the beginning (like you described earlier) or it is periodical?
General discussion on Zend Studio
The long freeze had last for about 30 seconds. This is currently gone. There are smaller ones but these last no more then 5 secs. The 30 second freeze was periodical. The others seem to occur more often after leaving studio alone for lunch break and then starting to work again.