Still not sure what causes this, however here is a snapshot of my settings
http://greenecozine.com/pics/snap.png
Basically, the app was minimised offscreen, then later realised the trayicon was not available to reactivate. Seems to be OK when not minimised to trayicon (taskbar only).
Othe apps running: Mozilla FF/ thunderbird, mozy home backup, windoze firewall and AVG A/virus. I also use Evernote but this appears to work ok alongside UR.
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S/pack 3 on xp 32bit
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Ultra Recall Professional 3.5b
Evaluation Version: 54 days remaining
Windows version: 5.1.2600.3.0
Install path: C:\Program Files\UltraRecall
EncryptPDF.dll version 3.0.0.2
mimepp.dll version 3.0.4
pdf2txt.dll version 3.1.0.4
PolarSpellChecker.dll version 4.0.5.4
SftPrintPreview_IX86_U_10.dll version 1.05
UltraRecall.exe version 3.5.2.1
unins000.exe version 51.49.0.0
C:\WINDOWS\system32\MsftEdit.dll version 5.41.15.1515
C:\WINDOWS\system32\RichEd20.dll version 5.30.23.1230
Database filename: C:\Program Files\UltraRecall\Samples\test.urd
Database version: 3.2.1 [11/11/2008 17:40:21]
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EDIT= sorry last image was unavailable. corrected now./edit