Question some installations failed (timeout)

I have some domains at two providers.
When I tried to upgrade Kunena from 1.09 to 1.53 (under joomla 1.5.12)
it worked very good with all domains at provider A.
The other provider B offers two modes
1) CGI-Mode with 8 sec. timeout
2) PHP-Mode with 30 sec. but some system commands are disallowed.

I have extracted the installation package and transferred to a server directory (the joomla tmp directory). Then I started the installation from there.
In the CGI Mode, I got after 8 sec an Internal Server Error (timeout).
In the PHP mode I got an error that some directories cannot be written. This is because in this mode I am an ApacheUser. So I changed all directories to CHMOD 777.
Now, after starting the installation I am getting after 30 secs. a white page.
When I look via backend into the Kunena component, there is an error message that the installation was incomplete.

Can it be that the installation takes longer than 30 seconds? (I tried it twice, in the night, so probably there was no heavy server load)

Is there a chance to install in a different (faster) way?

Any other ideas except changing the provider?

Thanks
Klaus

PHP: 5.2.9-1nmm1

Joomla installer has really bad performance especially in FTP mode. In my local server installing Kunena in FTP mode takes about 40 seconds where 32 secs is used by Joomla. Disabling FTP mode can help on performance, but then you need to chmod all to 777 or change owner to apache.

Installing from temp is the fastest way. Joomla 1.6 will have a feature where you can copy component manually to the right place, find and install it. Manual installation is not currently possible.

One thing you can do: you can remove images and copy them manually afterwards.

"remove images": Does this mean, I have to edit the XML-files where all files are listed or would it be enough, when I delete the images files in the directory from where I start teh installation?