Lion reboots after waking from sleep mode

Since Lion I sometimes get the following issue: When waking my Macbook Pro (older Macbook Pro 15" 2.4 GHz Intel Core 2 Duo, 4 GB Ram, Mac OS 10.7.1) it will restart (like hard restart) all the programs that were running at the moment I put it to sleep before, just like after a restart of the Macbook Pro with the feature checked for reopening all currently opened windows again. Finder also restarts, the menu bar at the top for example will be gone for some seconds.
This is getting really annoying, because this of course takes way longer than a normal wake up and sometimes not all programs are restarted properly, causing further issues...
Only thing I noticed is, that this only seems to happen when the Macbook Pro had slept for a longer time, for example over night. Sleeping for only a few hours doesn't seem to make any problem.
Any help would really be appreciated!

Try using Disk Utility to do a Disk Repair, as shown in this link, while booted up on your install disk.
You could have some directory corruption. Let us know what errors Disk Utility reports and if DU was able to repair them. Disk Utility's Disk Repair is not perfect and may not find or repair all directory issues. A stronger utility may be required to finish the job.
After that Repair Permissions.
No need to report Permissions errors....we all get them.
 DALE

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