Module development and code questions

This has little to do with drupal, but, the system is based on drupal. What is the limit of directories? Can I make a million of directories within the files directory?

I want to do this:
When someone uploads an image for node number 123, I will create a directory for that node in files and save that image in that directory. The directory will be: files/123/myimage.jpg.

What if the site will have 20,000 nodes? Will I experience problems? Should I redesign this strategy?

Thanks

Are there any plans to integrate auto-complete feature for textareas?

What I mean is auto-complete word by word while typing content to
textareas (when editing/creating nodes). I know that auto-complete is
already available for textfields in the core. What other possibility do I
have to add this feature. Any AJAX-framework supporting this?

I'm working on using ldap_integration and have run into a couple of problems. For some reason, I am not able to use TLS encrypted connections to communicate with my LDAP server(eDirectory 8.7.3). Cleartext does work though.

After doing some research, it has been pointed out that a possible cause is this:

"The LDAP client does not trust the Certificate Authority that signed the LDAP Server's certificate. Typically, each LDAP client keeps a list of all the Certificate Authorities that it trusts. If the CA has been recreated, the LDAP client must update its list."

I've created an administration module to browse, edit, delete and chmod files on the server and would like to contribute it to Drupal's modules list. I do searching the whole site with several keywords but found nothing about how to do that. I do create a project using create content menu but nothing happends. Anybody here could give me some hint on how to do this, please?

I've knocked up a fairly simple perl script which takes a CSV like file containing lines like

http://www.strangehorizons.com/reviews/|Strange Horizons Reviews|http://www.strangehorizons.com/reviews/atom.xml

and inserts each one into node table and aggregator2_feed table so that they can be used with the Aggregator2 module.

If anyone is interested I can publish it somewhere or send them a copy.

Hello,

I've installed Voting module and came across with the following problems:

1. When hovering mouse over stars flash rating name is displayed as text. When I move mouse out of the flash id displays 'Error'.

2. When I click a star to vote it says 'Saving' and doesn't do anything.

Did anybody knows such issues ?

Thanks.