Description:
In LibO 6.4, the Start Center starts extremely slow, when there are links to files that does no longer exist, most of all, when those files were on a network share. Regression, as this slowdown didn't exist up until 6.3 series.


Steps to Reproduce:
1. Install/use LibO 6.3 series
2. Place a Document on a Networkshare and open it in LibO 6.3
3. Open the Start Center (it should start with normal speed and list the file that was opened before)
4. Delete the file from the network share
5. Upgrade to LibO 6.4.4
6. Launch Start Center

Actual Results:
Start Center starts very slowly (10 Seconds instead of less then a half, with 3 missing files)

Expected Results:
Start Center should launch as fast as in 6.3 series


Reproducible: Always


User Profile Reset: No



Additional Info:
On the system where I recognized the problem, there were 3 missing files linked in start center, two of them were on a server that is no longer available. Broken links to files on the local system seem to have no (noticeable) impact. I guess this all is because of the introduction of Application-Icons on the Thumbnails. Seems like the function calls the file to create the overlay, instead of just use the file-extension to determine the right icon.