vTiger 5.04 on Dreamhost - Timeout

I am trying to install vTiger 5.0.4 at Dreamhost (shared hosting) and get the following error upon installation:

"Network Error (tcp_error)

A communication error occurred: ""
The Web Server may be down, too busy, or experiencing other problems preventing it from responding to requests. You may wish to try again at a later time.

For assistance, contact Customer Support. "

I already tried several times to upload and install.

I already checked the php configuration with phpinfo().

Besides I checked the rights of the folders (775) and files (664) as indicated in the installation instruction.

I already checked to run the script from several workstations around the globe since I thought the problem is my internet access but until now it did not work anywhere else either.

In the past I already installed vTiger 5.0.2 at Dreamhost and did not face any problems like that…

One time I was able to install a functional version of vTiger 5.0.4 even after the system timed out but all the other times the script is not installing any or all of the tables in the MySQL database.

Anybody an idea what can be the problem or how to solve it?

Anybody who is running vTiger 5.0.4 successful on Dreamhost or is it better to look for another provider who supports vTiger?